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Unfortunately for little heads, in half of the country we are witnessing a lice resurgence, with a new strain of the irritating bug making the scene. And these critters have staying power, mainly, because they evolved by becoming immune to typical over-the-counter medicines commonly used over the last couple decades.

With the defeat of a federal law designed to prevent 50 individual states from penning their own GMO labeling laws, General Mills has decided to switch rather than fight. It's going to label all their foods that contain GMOs, everywhere — because it's too cumbersome to label, or not label its products, on a state-by-state basis.

Once again, people are taking a drug (or unknown mixture of drugs) called Spice, K2, or by other names, which go under the misnomer "synthetic marijuana." The latest episode occurred near St. Petersburg, but it could have just as well been anywhere. The drug(s) are among the most abused in the U.S. at this time. And, they are very dangerous.

The rhythmic whipping of a sperm’s tail is the most basic perception as to how the cell strives to reach the egg for fertilization. But a recent study published in the journal Science reveals a novel mechanism, in which progesterone-dependent sperm cells are primed and activated in the female reproductive tract.

Acetaminophen has become the go-to analgesic for many painful conditions. And when used appropriately, it can be effective for headaches and fever reduction. But it's not useful for inflammatory conditions like arthritis, and it can have a significant downside if used in excess.

Each bottle of beer you drink makes you a bit more inebriated. Each cigarette you smoke increases your chances of damaging your lungs. Now, researchers say they've learned that each hour worked increases an individual's chances of developing heart disease. However, there are caveats to this finding.

In other species, greater height merely provides the ability to reach the highest branch or scare off potential predators. And thinness can mean residing at the lower end of the food pyramid. But being tall and thin, particularly for humans? A recent study says these folks are likely to thrive in their socioeconomic environment.

It’s fair to say that frozen food has a bit of an image problem. Surveys indicate that more that 40 percent of consumers have a strong aversion to it. But as Emma Boyland, Lecturer in Appetite and Obesity from the University of Liverpool explains, for the sake of our health, our wallets and the environment it may be time to stop turning up our noses to food in the freezer.

We here at ACSH are in a health war against smoking, not a war with Philip Morris or Altria or any other tobacco group. So if Big Tobacco can make money selling something besides cigarettes, great -- that is exactly what we have long said they should be doing. Meanwhile, nicotine, while addictive but relatively harmless by itself, is actually helping save lives, as it's being used by those who make their money in the cigarette business to get out of it.

A Florida woman who consumed raw chocolate milk produced by Miller's Organic Farm in Pennsylvania passed away after getting Listeria. Ironically, she thought she was drinking something more "natural" that would make her immune system stronger.

Researchers at the University of Michigan have developed a drug which blocks messages that direct stem cells to differentiate, forcing them to reverse course to a more embryonic state.

So another know-nothing celebrity is promoting her own take on infant feeding — Kristin Cavallari is pushing her goat's milk formula. But accepted experts in the field, like those at the U.S. Department of Agriculture, advise against following her weird lead. As do we.

According to a major study published in The Lancet Diabetes & Endocrinology journal, researchers have linked public transport usage with key health outcomes. Using a sample of over 150,000 British residents, they gave added credence to an important health principle known as active transportation.

The Senate recently voted down a bill which would ban states from requiring GMO labeling of food, creating one more win for anti-science charlatans.

A recent report in JAMA provides concrete epidemiological evidence that vaccine refusal has contributed to the increased risk for measles and pertussis, also known as whooping cough, which are vaccine-preventable diseases.

Good news for high-heel lovers as a healthier stiletto is now on the market — one that, yes, provides style but also a whole lot more comfort. It features construction that shifts body weight away from the ball of the foot, promising to reduce pain as well as the long-term damage some heels have been known to cause.

In trying to determine whether nightmares and suicidal behavior are in any way related, perhaps the first question that surfaces relates to causation. Yet while a new study, claiming new findings, tries to build a connection between the two issues, the research appears suspect in more ways that one.

Warnings about dehydration — especially for elite athletes abound. Water stations are frequent at marathon races. But as a recent report shows, you can have too much of a good thing, and excessive hydration can bring on hyponatremia, which can be dangerous and in some cases, even fatal.

A new modeling study in the journal PLOS Outbreaks suggests that the domain of Aedes aegypti mosquito, which spreads the Zika virus, could be a lot wider than previously thought. If this is a warm summer, 50 cities in the United States, from coast to coast, could be home to the bug.

Ever found yourself burning the midnight oil or needlessly awake, while munching a late-night snack like ice cream or potato chips? If so, you're not alone. A recent study shows that sleep deprivation can alter the chemistry in our brains, causing us to seek out something pleasurable. At night, frequently that delight is high-calorie food.

With the nation's sharp rise of marijuana use over the last decade, researchers sought to determine how the drug affects a user's ability to recognize the emotions of others. A recent Colorado State University study found that cannabis users were less able to identify moods and to express empathy.

If you have a hidden agenda, it’s best to try and hide it. That's what we’d recommend after reading a misleading, unbalanced report on the website Quartz. The reporter's unsupported piece isn’t really about meat consumption and how it’s making men sick — it's about meat and how it’s making her sick.

When properly equipped for the bitterness of winter, most people don't experience unusually cold hands and feet that turn colors, especially if gloves and warm socks are involved. But for some the painful experience is actually a disease: it's called Raynaud's, and it affects roughly 28 million Americans.

Online weight-loss programs are convenient — you can access them from home whenever it suits you. But how good are they? It's hard to tell sometimes just from looking at the site. A new study suggests that consumers and their healthcare providers take a close look before advising or using many of these sites.

This fiasco is a hilarious lesson about what happens when you try to take a crappy drug, and attempt to lobby it into a good one. Or at least one that the FDA would approve. This sorry saga has it all. Good guys, bad guys, idiots, and one women who walked away from it filthy rich. Enjoy.