Saturday 3 January 2015

The Only Three Skin Care Ingredients You Need

The Only Three Skin Care Ingredients You Need
Photo: Henry Leutwyler
Snail slime. Plant stem cells. Bee venom. These are just a few of the many, many confusing things touted on the ingredient labels of serums, moisturizers, and eye creams. If you’ve spent any time in Sephora lately, you know it can be completely overwhelming trying to shop for effective skin care. To cut through the noise, I talked to two top NYC dermatologists, Dr. Elizabeth Hale and Dr. Amy Wechsler, to get their recommendations on universal ingredients and products and find out exactly what should be in your skin care arsenal. 

Obviously everyone has individualized skin care needs, but let’s go ahead and generalize anyway. Basic skin care should include protection, preventing and treating signs of aging, and hydration.  I knew sunscreen would be number one on both doctors’ list (it was, and they both reminded me how important it is), so I asked them for their top three products/ingredients after sunscreen. Both dermatologists agreed on the same three must-haves:

Anti-oxidants: Anti-oxidants are both protective and preventive when it comes to aging. “Antioxidants are ideal for packing a super-sized punch against free-radicals to help protect your skin,” Dr. Wechsler said. “Look for these in your skincare products, and try to include them naturally in your diet, through treats like green tea or antioxidant-rich berries.”  According to Dr. Hale, free radicals from pollution and UV radiation can get into your skin and cause genetic mutations which can lead to skin cancer and the development of the signs of aging.

There are multiple effective anti-oxidants: “Vitamin C is a popular one, because in addition to having antioxidant properties, it’s also a natural skin brightener,” Dr. Hale says. “It’s probably one of the most common ones, too. Truthfully I like formulas that have multiple antioxidants.” She’s a fan of Cindy Crawford’s Meaningful Beauty Crème de Serum and SkinCeuticals CE Ferulic


Retinoids: Retinoids—like tretinoin and retinol—are skin care’s powerhouse ingredient, and one that has lots of research behind it. Retinoids just work. Dr. Wechsler recommends prescription retinol because, “[It] is a great anti-ager that can transform your skin, smoothing wrinkles, unclogging pores, lightening sun spots or discoloration, and improving the texture of the skin.” But it can also be a bit expensive and cause drying in people with sensitive skin, so there are effective over-the-counter options out there, too. Dr. Hale likes RoC’s retinol product line  and SkinMedica Tri-Retinol Complex

Moisture: Hydrated skin just looks and feels healthy. In addition to drinking enough water everyday, use a good moisturizer. “This is one of the easiest and most affordable anti-agers available, since a moisturizer can immediately reduce the appearance of dry or dull skin, minimizing fine lines and dull spots,” Dr. Wechsler pointed out.

As far as specific ingredients, “I like ceramide a lot because it’s a kind of mortar that keeps our skin cells together. It’s a fatty acid,” Dr. Hale said. “It’s a really good moisturizer that best mimics our body’s natural properties.” You definitely don’t need to spend a lot on moisturizer. Dr. Hale swears by CeraVe lotion, a popular drugstore option.
Now get out there and build yourself a skin care routine. After you get into a groove with those three, then you can start investigating things like “royal jelly” and “circuminoids.”


Original Post Found Here

Thursday 1 January 2015

Fish Oil Boosts Brain Power

Fish Oil Boosts Brain Power

Photo by Getty Images


Fish oil is touted as a magical potion that boosts fertility, heart health, and weight loss and promotes a clear complexion, while lessening the effects of depression, ulcers, diabetes and many more conditions. But there’s another benefit to these glossy little capsules: They may prevent Alzheimer’s disease. 


A new study of 819 people published in the journal Alzheimer’s & Dementia found that taking fish oil supplements on a daily basis is associated with a significant decrease in cognitive decline (as measured by the Alzheimer’s Disease Assessment Scale and the Mini Mental State Exam) and brain atrophy — important findings in light of statistics that show that one person per minute is diagnosed with Alzheimer’s disease. 


“We found that fish oil use was associated with better performance on standard tests of memory and thinking abilities over time, compared to those who didn’t take supplements,” lead study author Lori Daiello, a research scientist at the Alzheimer’s Disease and Memory Disorders Center at Rhode Island Hospital, tells Yahoo Health. “They also experienced less brain shrinkage in areas of the brain important for healthy cognitive aging — the cerebral cortex and hippocampus, the portion of the brain responsible for forming and retaining memories.” 


For this study, researchers analyzed information from neuropsychological tests and MRI brain imaging performed at regular intervals for up to four years during the Alzheimer’s disease Neuroimaging Initiative, a longitudinal study of brain aging and Alzheimer’s Disease. The population consisted of a group of older adults with varying degrees of cognitive capability: normal cognitive function, mild cognitive impairment, and Alzheimer’s disease. The benefit of fish oil appeared strongest in the group with normal cognitive functioning. “Retrospective studies cannot establish cause and effect, so we can’t make a global recommendation that everyone should start taking fish oil supplements. But the findings highlight the need for additional research on the effects of longterm fish oil use on brain health in later life,” says Daiello.  


The main ingredient in fish oil is DHA, omega-3 fatty acids found in cold-water fatty fish such as salmon, swordfish, trout, yellow fin tuna, mackerel, and more. (Non fish-lovers can find it in eggs, milk, and algae-derived supplements). 

According to Daiello, there is no definitive evidence that eating fish daily is better than taking fish-oil supplements. But some people dislike the fishy breath that lingers after taking the supplements. “In that case, you could always store the capsules in the freezer, which seems to diminish the scent,” suggests Daiello. (Though the study did not address the dosage of daily fish oil to take, the World Health Organization recommends a daily EPA and DHA intake of 0.3 to 0.5 grams and a daily ALA intake of 0.8 to 1.1 grams.)


And while the effects of fish oil have been well-documented, they also carry a “buyer beware” element. One study, conducted by a testing company called LabDoor, found that what’s advertised on the label of many supplements may not live up to their promise of what’s advertised on the labels. When the company analyzed 30 top-selling brands, they found that six products exaggerated the amount of omega-3 on their labels by 30 percent. And at least a dozen products contained DHA levels that were 14 percent less than advertised. “Mislabeling is a big problem because the FDA considers fish oil supplements food, not drugs, so they aren’t regulated,” says Daiello. “So it’s tough to verify the purity of what you buy.” 
To select the best supplement, talk to your doctor, who may be able to recommend a pill that’s right for your needs. Or join a subscription-based website such as Consumer Lab, which regularly tests vitamins and supplements. 

5 Ways to Lower Your Risk for Alzheimer's Disease

5 Ways to Lower Your Risk for Alzheimer's Disease
New research suggests aluminum exposure contributes to dementia, but there is plenty you can do to lower your risk. 
Photo: Getty Images

Aluminum is one of the most widely used metals in the world. Consider your morning commute: You hop into your car, where you’re protected from the elements by aluminum body panels. You sip your morning coffee from an aluminum travel mug. You arrive at your desk and pry open your laptop’s aluminum case to check your email.

All of this exposure to aluminum, however, may come at a cost. Research suggests that the metal — a known neurotoxin — builds up in the brain over time, contributing to Alzheimer’s disease and other neurodegenerative conditions.

Writing in a recent issue of The Lancet, neuroscientist Chris Exley made an impassioned case that the modern Aluminum Age, as he calls it, plays a significant role in neurodegenerative diseases. We overlook these risks because aluminum is so common, Exley argued. But there are several explanations for how aluminum may contribute to Alzheimer’s disease. For one, aluminum encourages proteins called amyloids to clump together in the brain, which is a key feature of Alzheimer’s disease. This accumulation may block signals between nerve cells or lead to changes that destroy brain cells.

Aluminum is toxic to the brain, just like mercury, lead, and arsenic, said neurologist David Perlmutter, MD, author of Grain Brain and the Grain Brain Cookbook, in an interview with Yahoo Health. “Over the past 20 years there have been several important research publications that have drawn conclusions relating Alzheimer’s disease to aluminum exposure,” he added. Studies have linked higher aluminum content in drinking water to higher rates of Alzheimer’s disease, for example. And one of the most promising Alzheimer’s therapies involves removing aluminum from the body, providing evidence that the two are closely connected, according to a research review in Frontiers in Aging Neuroscience.


Five Tips to Keep Your Brain Sharp
Because aluminum is so pervasive, it’s nearly impossible to avoid completely. But taking certain steps can significantly lower your risk of developing dementia. “The truth of the matter is that there is no treatment for dementia now or at any time in the foreseeable future, and yet dementia, for the most part, is strongly related to lifestyle choices such as diet, exercise, and even preventing head trauma,” said Perlmutter. “This is powerful information as it puts dementia into the same category as heart disease, for example, in which everyone seems to be very aware of the fact that there are things we can do to prevent that issue.”

If you’re looking to keep your dome healthy, lowering your exposure to aluminum is one course of action, but it’s not the most important one. “These studies on aluminum are intriguing but are in no way as significant as other important and modifiable risk factors for Alzheimer’s disease for which there is profound support in the medical literature,” Perlmutter said.

Follow these tips to reduce your risk for dementia and keep your brain healthy as you age:
1) Watch your blood sugar. “Even mild elevations of blood sugar, well below the threshold for making a diagnosis of diabetes, have now been demonstrated to significantly correlate with the risk of developing dementia,” said Perlmutter. To keep blood sugar under control, limit the amount of carbohydrates you consume and choose healthy fats such as olive oil, coconut oil, nuts, and seeds. If you choose to eat meat, pick grass-fed beef and wild fish, which are higher in heart-healthy omega-3 fatty acids.

2) Keep up with cardio. “Physical activity is a wonderful brain activity,” Douglas Scharre, MD, director of the division of cognitive neurology at Ohio State University, told Yahoo Health. Aerobic activity can make your brain more resilient against developing dementia, studies suggest. Perlmutter recommended at least 20 minutes of sustained aerobic activity each day, such as running, brisk walking, or bike riding. 

3) Protect your noggin. Even mild head trauma early in life — a hard knock during a high school football game or a rough crash while rollerblading — can set the stage for dementia later on, Perlmutter said. The simple fix: Always wear a helmet when biking, skateboarding, or rollerblading.


4) Sip mineral water. Silicon is a common mineral in tap and bottled water. It also chemically counteracts aluminum and is given to patients to treat acute aluminum poisoning. A 2013 study in the Journal of Alzheimer’s Disease found that drinking mineral water with silicon helped flush aluminum from the body. Check the label on your bottled water, which should list the minerals it contains.

5) Lower your cholesterol. If your cholesterol levels are high, getting them under control may reduce your risk for dementia. “In studies where large groups of people were followed for many years, people in midlife who were taking cholesterol-lowering statin drugs reduced their risk for dementia and Alzheimer’s disease by about 60 to 70 percent compared to those who weren’t taking statins for elevated cholesterol,” said Scharre. Keep your heart and head happy with these five tips to lower your cholesterol levels.

Original Post Found Here:

How Healthy Is Your Brain? Take This Test to Find Out

How Healthy Is Your Brain? Take This Test to Find Out

How long can you stand on one foot? This isn’t just a test of balance — it’s a test of brain health. (Tom and Steve/Photographer’s Choice RF/Getty Images)


Internet brain games aren’t the only way to gauge what’s going on between your ears. A simple physical test may be able to tell you how healthy your brain is, according to a new study from Japan, published in the journal Stroke.


In the study, researchers had 1,387 healthy people stand on one leg with their eyes open for as long as possible, up to a minute. Then they performed MRI’s on the subjects, whose average age was 67, and had them complete four cognitive tests.


Interestingly, the length of time the people could balance predicted what the scientists saw on the brain scans: Those who were unable to stand flamingo-style for more than 20 seconds were more likely to have cerebral small vessel disease, a condition where tiny blood vessels deep in the brain are damaged. None of the study participants showed any symptoms.




Specifically, 16 percent of folks with one lacunar infarction lesion — a small, damaged area of the brain where a blood vessel has clogged — struggled to balance. About a third of those with more than two of these lesions had trouble standing on one foot. Likewise, 15 percent of people with one microbleed brain lesion — a minor hemorrhage due to a damaged vessel — and 30 percent with more than two such lesions had poor balance.


These trouble spots in the brain are what Richard Senelick, M.D., a neurologist and medical director of the HealthSouth Rehabilitation Institute of San Antonio, calls “silent” strokes. “You have tiny little blood vessels throughout your brain — they’re microscopic,” he says. “They can close off, and you get little damaged areas of the brain, but no symptoms.” They’re more common in people who are older or who have hypertension (particularly if it’s uncontrolled) or diabetes.


“If you get enough of these, you can actually get a [type of] dementia, called a vascular dementia,” Senelick says. In the study, short standing times were independently associated with poorer performance on the cognitive tests.




So why the difficulty balancing?


Previous research has shown a link between “gait dysfunction” — that is, an abnormal way of walking — with brain lesions and blockage of small vessels. This study suggests that one component of gait — balance — may be especially tied to brain health, possibly because it reflects early brain changes that don’t necessarily cause symptoms, but increase risk of stroke. “One-leg standing time is a simple measure of postural instability and might be a consequence of the presence of brain abnormalities,” lead study author Yasuharu Tabara said in a statement.


However, Senelick cautions against automatically concluding you face an elevated risk of stroke if your balance is poor. As you age, your vision can become cloudy, your hearing may decline, your joints stiffen, and your proprioception (your sense of where your body is in space) worsens — all factors that may affect your ability to stand on one leg for a long time. (In fact, in the study, older participants had more trouble balancing.)

“Unless your check for all these other things, [this test] doesn’t predict your risk for having a stroke,” Senelick says. However, it does suggest you may need to seek evaluation — or as Tabara said, “Individuals showing poor balance on one leg should receive increased attention, as this may indicate increased risk for brain disease and cognitive decline.”


Flunk the test? Ask your doctor if you should be concerned, and take a proactive approach to brain health. “People say, ‘What can I do to keep from getting Alzheimer’s? What can I do to prevent stroke? If it’s good for your heart, it’s good for your brain,” says Senelick. “Work on your risk factors: hypertension, diabetes, poor diet, lack of exercise, smoking.” 



Say Hello to the Latest Mosquito-Borne Virus: Chikungunya

Say Hello to the Latest Mosquito-Borne Virus: Chikungunya
Photo by Getty Images
Scientists knew it was coming, and now it's here: The first U.S. cases of chikungunya, a virus carried by mosquitoes that can cause fever and joint pain, have surfaced in a Florida man and woman who have not traveled to any of the foreign countries where the disease is common, according to the Centers for Disease Control and Prevention (CDC). The two cases indicate that the virus may begin to pop up more frequently in the region.

Chikungunya has historically been limited to countries in Africa, Asia, Europe, and the Indian and Pacific Oceans. But it made its way to the Western Hemisphere last December, when Puerto Rico and the U.S. Virgin Islands reported 121 and two cases, respectively, of the locally acquired virus. And while cases have certainly appeared in people in the U.S. before, those have always been travel-related instances, CDC arboviral disease chief Roger Nasci told Yahoo Health. These new cases indicate that a local mosquito bit someone who had carried the virus from another country; then said mosquito bit another person, spreading the disease locally.

Two species of mosquitoes spread the virus — Aedes aegypti (the same critter to blame for spreading dengue fever) and Aedes albopictus, both of which are found in the southeastern U.S. and parts of the Southwest. A. albopictus also resides farther up the East Coast through the Mid-Atlantic States, as well as in the lower Midwest region. The best way to avoid chikungunya, Nasci stressed, is to avoid mosquito bites by wearing repellent and long sleeves and making sure that window screens are in good condition. In this case, though, staying inside at dusk won't help much, as these particular types of mosquitoes feed during the day.

CDC officials expect that chikungunya will behave like dengue in the United States, where imported cases have resulted in sporadic local transmissions without triggering widespread outbreaks. None of the more than 200 imported chikungunya cases between 2006 and 2013 have triggered a local outbreak.

Chikungunya joins another scary-sounding disease enjoying the limelight this week: babesiosis, a malaria-like illness caused by microscopic parasites that infect red blood cells and are spread by certain ticks. Six cases were reported in New Jersey on Thursday, with five other suspected cases being investigated, according to the Ocean County Health Department. Though not everyone who gets infected develops symptoms, babesiosis can cause fever, chills, body aches, and nausea; it can also lead to complications that include hemolytic anemia, unstable blood pressure, and even death — particularly for at-risk patients such as those who are elderly or living with compromised immune systems.

The chikungunya-babesiosis news is not exactly the most welcome for those who are already anxious about mosquitoes and ticks as they try to avoid illnesses such as West Nile virus and Lyme disease. Still, notes Nasci, "there's absolutely no reason to panic. That's always the challenge of getting a story out with information about a new disease."


The New Health Threats You'll Be Seeing In 2015

The New Health Threats You'll Be Seeing In 2015

Don’t let these new health enemies threaten you in 2015. (James Brey/Getty Images) 

There are the health woes we worry about year after year — think obesity, diabetes, and opioid addiction — and then there are the ones that threaten to catch us off guard. We’re talking about the public health enemies that emerge with sudden, unexpected force — and then leave us all wondering why we didn’t see them coming.


This year, it was Ebola, the deadly virus responsible for thousands of lives lost in West Africa. “Ebola has gotten most of the attention this year,” says Scott Weaver, director of the Institute for Human Infections and Immunity at the University of Texas. Yet, despite fears of a stateside epidemic, the virus never invaded U.S. borders in serious numbers — and it’s not likely to do so in 2015, he says, even as the war against Ebola in West Africa rages on.


But there are other viruses — some familiar, some not — that are poised for attack on U.S. soil in the coming year, whether we’re ready or not. And it’s just not infectious invaders we have to worry about, either — there are also a handful of homegrown health foes, ranging from fracking to inferior health insurance, threatening to tighten their grip in 2015.


CHIKUNGUNYA VIRUS 

image Mosquitos may just seem like pests, but they could actually be carrying a debilitating virus. (BSIP/UIG/Getty Images)

The chikungunya virus may have a funny-sounding name, but it’s nothing to laugh about. So far, all but four states in the U.S. have reported cases of chikungunya — and the mosquito-borne virus’s foothold will only increase in 2015, says Weaver. As chikungunya spreads from the Caribbean to Central and South America, “I suspect the number of cases may increase, because the virus is going to be circulating in a much larger area, with much larger populations,” he says. “I think it’s inevitably going to spread up through Mexico to the U.S. border.”


Chikungunya made tabloid headlines this week when actress Lindsay Lohan contracted the virus while vacationing in French Polynesia. "Being sick is no fun," Lohan tweeted. "But happy new year everyone. Be safe." And she shared an important lesson learned from her experience: use bug spray.
An under-the-weather Lohan with pals in French Polynesia. (Photo: Instagram)

And trust us, this is one virus you definitely don’t want to catch: Chikungunya causes debilitating, arthritis-like pain that can last for years, says Weaver. 

Right now, chikungunya — which has no known cure — is primarily transmitted through the Aedes aegypti mosquito, found only in the southern United States. However, another strain recently emerged in Brazil that may favor the Aedes albopictus mosquito, which “can survive further north in the temperate areas of the U.S.,” says Weaver. “It can survive cold winters. So if that strain is imported in travelers, it could be a risk almost anywhere in the eastern half of the U.S., where Aedes albopictus is present.”

Chikungunya can’t spread from person to person — a mosquito go-between is necessary — so you’re currently most likely to catch it while traveling in the Caribbean, Central America, or South America. “You really have to cover up your skin, either with clothing or repellant, and worry about being bitten all day long,” Weaver says.

Unlike most mosquitos that pester us in the States, Aedes aegypti is primarily a daytime biter — and it will come indoors, especially where there’s no central air or window screens. “You can’t simply assume that when you’re inside you’re protected,” says Weaver. 

Another virus to keep your eye on: dengue. Although it’s not yet a major concern in the United States, the United Nations recently issued a warning about potential outbreaks of the deadly virus in Europe, West and Central Africa, and South America.


HIGH-DEDUCTIBLE HEALTH PLANS

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Tempted to choose a high-deductible plan? Your health may take a hit if you do. (Image Source/Getty Images)

Under the Affordable Care Act (ACA), we’re all required to have health insurance — but that doesn’t mean we’ll all end up with quality coverage, even if our employers are providing the plans. Nearly a third of large employers plan to offer only high-deductible plans in 2015, up from 22 percent in 2014, according to the National Business Group on Health. “There’s been a very powerful trend toward greater patient cost sharing in health insurance plans,” says Paul Ginsburg, a professor at the University of Southern California’s Schaeffer Center for Health Policy & Economics.

In fact, according to a new American Health Policy Institute report, “Although employers will continue to pick up the large majority of employee health care costs, employee deductibles, copayments, and out-of-pocket maximums will continue to increase.” Starting in 2015, high-deductible plans can require out-of-pocket spending of up to $6,450 for a single person and $12,900 for a family.

Why the shift toward such high deductibles? For a long time, the cost of health insurance has been rising more rapidly than our incomes, so companies are increasingly turning to high-deductible plans to keep employee premiums down, says Ginsburg.

However, there may also be a less benign financial motive: In 2018, the ACA’s so-called Cadillac tax will go into effect, forcing companies to pay a 40 percent excise tax on employee health coverage beyond $10,200 for an individual or $27,500 for a family. In preparation, some employers are switching to high-deductible, low-premium plans to avoid being hit with the tax, says Ginsburg.

It’s not just to your pocketbook that high-deductible plans pose a threat. “Many insurance companies and employers see deductibles as a way to keep the use of health care services down,” says Sabrina Corlette, a senior research fellow at Georgetown University’s Center on Health Insurance Reforms. “When consumers have to pay that upfront cost for their health care, they may be a little more reluctant to get it. These plans can cause people to delay or forgo care that they actually need.”

Although the ACA requires free coverage of many preventive services, high-deductible plans may discourage management of chronic disease — for example, if a patient needs frequent doctor visits and monthly prescriptions, but has to pay the costs out of pocket, he or she may decide to opt out of necessary care, says Ginsburg.

His advice: If you can’t easily obtain the cash to cover your full deductible in case of an emergency, pick a higher-premium, lower-deductible plan. Likewise, if you need health care throughout the year — say, you have a condition that requires monthly check-ups — you may want to consider a lower-deductible option, says Corlette.

INFLUENZA

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This year’s flu vaccine isn’t as effective as hoped, which means the season may be especially severe. (Mehmed Zelkovic/Getty Images)
 
Although this flu season isn’t poised to be a repeat of the 2009-2010 H1N1 pandemic, early data does suggest that this year could be severe, according to the Centers for Disease Control and Prevention. So far, H3N2 viruses have dominated the season, and in the past, when this strain has emerged as the primary threat, death rates have been unusually high, the CDC says.

What makes this especially worrisome: The circulating strain of H3N2 has mutated, so this year’s vaccine is protective in only about half of cases. “The flu vaccine that’s developed each year is based on educated guesses that take place long before the transmission season begins,” says Weaver. “Unfortunately, one of the strains that is circulating fairly widely was not included in the formulation that was developed.”

Blame it on a phenomenon called “antigenic drift,” where the influenza virus mutates so it can infect more people. “The virus is constantly changing,” Weaver says. “If you were infected with H3N2 a few years ago, the strain circulating this year may overcome that immunity, and you can become reinfected with that strain.”
Still, the CDC strongly recommends vaccination, since it will protect against the other circulating strains of the flu. And even if you do get sick, your infection may be milder if you’ve been vaccinated.


E-CIGARETTES 

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Although not as chemical-laden as traditional cigs, E-cigarettes aren’t entirely benign, either. (Martina Paraninfi/Getty Images)

For the first time, U.S. teens are experimenting with E-cigarettes at a higher rate than traditional cigs, according to a new national study from the University of Michigan. And the uptick in E-cigarette use — in both teens and adults — is only going to continue in the coming year, predicts James Sargent, M.D., a professor of pediatrics and co-director of the Cancer Control Research Program at Dartmouth University. Since the marketing of E-cigarettes is largely unregulated, “there’s nothing out there to stop [the upward trend],” he says. “They’re on television. They’re all over the place. And people are curious.”

Although many would argue that E-cigarettes are preferable to the real deal, they’re not without risk: A 2014 UC San Francisco study found that teens who “vape” are nearly eight times more likely to smoke cigarettes than those who don’t use E-cigs. “The concern is that children will get addicted to nicotine by using E-cigarettes, and then they’ll realize they can get nicotine a lot more efficiently through cigarettes,” says Sargent. Similarly, former adult smokers might reawaken their nicotine addiction by using E-cigarettes, and then end up relying on both products.

Another fear: Adult smokers may take up E-cigarettes to help them quit, but ultimately end up being “dual users” — that is, puffing on both E-cigarettes and traditional cigs. In another 2014 UC San Francisco study, vaping wasn’t associated with a change in cigarette consumption, suggesting that the smoke-free devices may not be as useful for kicking the habit as hoped (although research here is conflicting). “The concern is that being able to use E-cigarettes will just prolong smokers’ use of cigarettes,” since it can offset some of the cost of cigarettes or allow them to dose up on nicotine in places were cigs are prohibited, says Sargent.

 FRACKING

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Fracking may elevate levels of methane in drinking water — one of several ways it could threaten human health. (Mark Thiessen/Corbis)

As fracking — an oil-drilling method that injects high-pressure water and chemicals below the earth’s surface — continues to gain ground, American support for it is on the decline: In a new Pew Research Center survey, 47 percent of Americans said they’re against the increased use of fracking, versus 38 percent in 2013. This rising tide of opposition is reflected in New York Governor Andrew Cuomo’s recent ban on fracking in the Empire State, which he announced after the state released a public health analysis of the practice.

Even so, “fracking isn’t going away,” says Susan Nagel, a reproductive health expert at the University of Missouri, who has studied chemicals used in fracking. “It’s very, very entrenched in many states.” Part of the problem, she admits, is the lack of human health data on fracking. But the studies that are available have shown alarming effects. A 2014 Environmental Health Perspectives study, for example, found that pregnant women who live near fracking sites are more likely to have children with congenital heart defects and, possibly, neural tube defects.

Research also suggests a link between fracking and reduced sperm count, potentially because of the chemicals that the drilling method requires. “They’re being liberated into the air throughout the process,” says Nagel. “And then, through disposal of the wastewater, they contaminate surface water and potentially groundwater.” 

About a third of the chemicals used are endocrine disruptors — specifically, “many of them are anti-androgens,” she says. “So they oppose the action of normal male sex hormones, like testosterone. Androgens are needed for normal sperm development. Exposure to anti-androgens can inhibit that entire process.”

It’s unknown how close you have to live to fracking zones in order to see these potential health effects. “There are certainly millions of people in this country that live in the thick of drilling areas,” says Nagel. “Right now, we don’t know how close you have to live — that is the concern.”



SYNTHETIC MARIJUANA

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Synthetic marijuana is now illegal, but its use doesn’t seem to be slowing down. (The Washington Post/Contributor/Getty Images)

What looks like potpourri is actually a drug more potent than marijuana. Often referred to simply as “Spice,” synthetic cannabinoids — of which there are hundreds of varieties — are considered Schedule I substances, officially making it illegal to sell them in convenience stores, where they initially began cropping up a few years back.

“The problem is, we are continuing to see people in very high numbers [who are] psychotic, after having used synthetic cannabinoids,” says Stephen Ross, M.D., director of addiction psychiatry at NYU Tisch Hospital. When asked where they acquired the drugs, “they say the local bodega or deli — it’s like $6, and it’s super potent,” he says. “Synthetic cannabinoids are still very available.”

In August 2014, New Hampshire Governor Maggie Hassan declared a public health emergency in response to the state’s high number of Spice overdoses. Other states are seeing an uptick in poison-control calls about the drug. “In 2013, we had zero calls to the Poison Center about it. So far to date in 2014, we’ve had 133 calls about synthetic marijuana,” Lee Livermore, the public health educator for the Upstate New York Poison Center, told Time Warner Cable News. This past summer, nearly 120 people in Dallas and Austin overdosed on the drug in a five-day period.

With synthetic marijuana, “we see cardiac toxicity. We’ve seen some renal toxicity,” says Ross. “There are even some deaths associated with [the drug].” 

What makes synthetic cannabinoids so potent?

Marijuana contains two primary compounds: THC and cannabidiol. THC — the component known for getting people high — binds to cannabinoid-1 receptors, which are responsible for the addictive, anxiety-inducing effects of marijuana. “THC from cannabis smoke is only a partial activator of that receptor — it’s what’s known as a ‘partial agonist,’” Ross says. “But synthetic cannabinoids are a full agonist of that receptor.”

Plus, the cannabidiol in marijuana has the opposite effect of THC — it’s calming — so “it tempers the negative psychiatric effects of activation of the cannabinoid-1 receptor,” says Ross. Synthetic cannabinoids don’t have that advantage. “They only have the [compound] that causes addiction, anxiety, and psychosis.”


WHOOPING COUGH

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The long-gone disease is making a comeback, with rates at a 70-year high. (Photo: The Image Bank/Getty Images)
You probably lump whooping cough, or pertussis, in with diseases of yesteryear, like Scarlet fever and the measles. But the truth is, the respiratory ailment is making a killer comeback—in fact, California is in the midst of a whooping cough epidemic, with rates at a 70-year high. As of late November, nearly 10,000 cases, primarily in children, had been reported in the state, according to the California Department of Public Health. It’s not just the West Coast that’s suffering, either: From January to mid-August of 2014 alone, there were more than 17,000 pertussis cases in the U.S.—a 30 percent increase over the same time period in 2013, according to the CDC.
 
And the outlook for 2015 isn’t any better. “I think we’re going to continue to have pretty substantial pertussis in the United States in 2015,” says Arthur Reingold, M.D., head of epidemiology at the Berkeley School of Public Health. Why? Across the U.S., particularly in wealthier areas, parents are opting not to vaccinate their little ones, he says, and even if they do, the current vaccine doesn’t offer lifetime protection. In the 1990s, U.S. practitioners switched from the whole-cell pertussis vaccine to the acellular one, “because the old vaccine produced more fever, pain, and tenderness,” explains Reingold. Problem is, the new version wears off after a few years, leaving children vulnerable to whooping cough.
 
When the bacteria that causes the cough is actively circulating, infants are at risk of being infected by non-vaccinated family members or those with waning immunity—and the outcome can be deadly. “In the first few months of life, whooping cough can be life threatening,” Reingold says. “Even if infants get their first dose of vaccine when they’re supposed to—at 2 months of age—they’re not fully protected until they’ve had several doses.” 
 
That’s why the CDC recommends vaccinating pregnant women (the mother’s immunity is passed along to her baby), as well as any other family members who’ll be around the newborn. “It’s called cocooning—trying to vaccinate all the other people in the household around the young baby,” Reingold says. And parents should make sure their children receive the full schedule of vaccines for maximum protection, he adds.


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