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Pot Prevents PTSD in Rats

If taken within 24 hours of trauma, rats show no PTSD symptoms: study

(Newser) - Should we start issuing marijuana to soldiers? It might not be the worst idea, based on a new study from Haifa University in Israel, which found that pot could prevent post-traumatic stress disorder in rats—provided it was administered within 24 hours of the trauma occurring. “There is a... More »

Tough Choice for Bald Men: Hair or Sex?

Those taking finasteride likely to experience long-lasting effects

(Newser) - Tough news for the follicly challenged: Balding men taking finasteride, Merck's prescription drug that goes by the names Propecia and Proscar, may find they have trouble in bed—for a long while. Though the drug's label warns of "reversible" symptoms of sexual dysfunction, a small survey of 76 men... More »

Spacing Babies Too Close May Raise Autism Risk

Researchers find it 'shocking'

(Newser) - Cue another theory in the elusive search for the causes of autism: having children spaced too closely together. Researchers have discovered a risk that's apparently small, but significant—about 0.76% for children conceived less than a year after a sibling, versus 0.47% overall—based on a study of... More »

Middle-Aged Women: Have That 2nd Drink

Turns out one to two drinks promote health in old age

(Newser) - Conventional wisdom (along with the American Heart Association) has long held that men can soak up the health benefits of alcohol by way of two drinks per day—while women have been told to not have more than one. Parity at last: Women who have a drink or two a... More »

Facebook Can Trigger Asthma: Docs

One asthmatic's 'peak expiratory flow' dropped 20% after logging on

(Newser) - Facebook: a potential minefield for debtors , married couples , and ... people with asthma? Apparently, according to a group of Italian doctors who recount an odd case in the medical journal Lancet. It seems an 18-year-old asthmatic had been in good health until he stumbled upon his ex-girlfriend—and her bevy of... More »

Brain Teasers May Speed Up Dementia, Alzheimer's

(Newser) - Sudoku, crosswords, and even listening to the radio may not be all they're cracked up to be when it comes to staving off mental decline. A study by researchers at Rush University Medical Center in Chicago indicates that once diagnosed with dementia and Alzheimer's, increased brain activity may actually accelerate... More »

Lab-Grown Corneas Restore Sight

Six out of 10 patients were able to see

(Newser) - For the 1.5 million who go blind each year waiting for new corneas, new hope: For the first time, lab-grown corneas have been successfully transplanted—and worked, stimulating regeneration and allowing patients to blink and cry, and, in some cases, fully restoring their sight. Currently, human donors are the... More »

Postpartum Depression Is Preventable

... if trained nurses get involved

(Newser) - The solution to preventing postpartum depression may lay in the hands of ... nurses, according to a new study. Researchers in the UK found that women who received a visit from a nurse who had been trained to assess and psychologically support new moms were 30% less likely to have become... More »

More and More Girls Hitting Puberty by Age 7

And the percentages nearly double by age 8

(Newser) - Today's girls are even more likely to enter puberty by age 7 or 8, finds a new study. At age 7, 10.4% of white, 23.4% of black and 14.9% of Hispanic girls had hit puberty, based on their breast development. Those numbers nearly double just a year... More »

Antidepressants, Miscarriage Linked

Use translates into a 68% increased risk, say researchers

(Newser) - Women who take antidepressants while pregnant run an increased risk of suffering a miscarriage, according to a new study. Canadian scientists looked at the records of 70,000 women and found that of the 5,000 who had a clinically recorded miscarriage, 5.5% had filled at least one prescription... More »

Burger, Fries Aggravate Asthma

Eating a high-fat meal worsens inflammation

(Newser) - Looks like a fatty diet affects more than your pant size: It may make asthma worse. A group of 40 asthma suffers were given either burgers and hash browns or yogurt. Those who ate the high-fat meal, which clocked in at 52% of calories from fat, had inflammation in their... More »

Taking Too Many Vitamins Raises Cancer Risk

Antioxidants aren't as good for you as advertised

(Newser) - If you're one of the “worried well” chowing down on Vitamin C and E supplements because you think antioxidants are good for you, think again. A new study suggests that abnormally high levels of antioxidants might actually increase your cancer risk. Stem cell researchers discovered the danger by accident,... More »

Genome Breakthrough Zeroes In on Disease

New approach decodes entire genomes of individual patients

(Newser) - Two teams of researchers have identified the exact genetic cause of their patients' rare diseases by sequencing their entire genomes, a sharp but promising departure of the previous application of genetics to disease. “I suspect that in the next few years human genetics will finally begin to systematically deliver... More »

Heart Risk Linked to Obesity—in Preschoolers

Definitive connection can't be made due to lack of relevant study

(Newser) - Levels of a marker tied to adult heart disease were twice as high in the blood of obese children as in the blood of average-weight kids in a recent study. The twist is that the research subjects were 3 to 5 years old, sparking concerns about the cumulative health effects... More »

Researchers Find Cancer 'Fingerprints'

Rearranged chromosomes can be used to ID tumors, personalize treatment

(Newser) - Scientists have developed a new, more accurate method of tracking specific cancers using genetic “fingerprints”— the unique way every cancer rearranges chromosomes. Those rearrangements can be pinpointed with new genetic sequencing methods, allowing doctors to follow the cancer’s trail in the blood. The breakthrough is a key... More »

Botox Numbs Emotional Response

If you can't frown, brain finds it harder to be sad, study surmises

(Newser) - If you turn your frown upside down with Botox, your brain gets the message and makes you less receptive to negative emotional stimuli. That’s the conclusion of a new study of people who had their frown muscles paralyzed with the cosmetic toxin. Researchers tested subjects on the speed of... More »

Fearless Gambler? Could Be Brain Damage

Harm to amygdala seems to impair 'loss aversion'

(Newser) - People with damage to their amygdala, a deep part of the brain that governs basic value judgments, are more likely than others to take big risks for uncertain payoffs. A new study pitted 2 women with amygdala-specific lesions against 6 controls in tests of their willingness to gamble. The control... More »

Journal Retracts Study Linking Autism with Vaccination

Says infamous paper wasn't properly randomized

(Newser) - Ever heard of that study linking the MMR vaccine with autism? Well, never mind, says the Lancet, the British medical journal that published the study back in 1998. The journal today retracted and discredited the study, saying its author, Dr. Andrew Wakefield, hadn’t properly randomized the study or cleared... More »

US Newborns Get Smaller

Mysterious drop most acute with mothers considered least at risk

(Newser) - The birth weight of the average full-term baby born in the US decreased by 1.83 ounces between 1990 and 2005. Researchers discovered the trend, which runs counter to received notions about increasing birth weight, after studying the records of 37 million newborns. Even more surprising, babies delivered by the... More »

Non-Stick Chemical Linked to Thyroid Issues

PFOA is used in pots and pans, furniture and even clothes

(Newser) - A common household chemical used to make non-stick pans, stain-resistant furniture, and even apparel has been linked to an increased risk of thyroid issues. The chemical, PFOA, is inert and can stay in human tissue for long periods. Researchers looked at medical records of almost 4,000 Americans and found... More »

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