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Study: Mammograms save lives, but are also overrated

LOS ANGELES — The idea that American women would benefit by having fewer mammograms — and having them less frequently — remains controversial. A new study tries to help women and their doctors understand why less can be more when it comes to breast cancer screening.

Health organization serves up sour news on sugar

LONDON — Just try sugar-coating this: The World Health Organization says your daily sugar intake should be just 5 percent of your total calories — half of what the agency previously recommended, according to new draft guidelines published Wednesday.
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Save high-protein diets for later, researchers say

Consuming high levels of protein — particularly animal protein — is a bad strategy if you’re at midlife and aiming to live into old age, new research finds. But a study out Tuesday reveals that in older age, fortifying one’s diet with more protein-rich foods appears to be a formula for extending life.

Painkiller abuse begins with doctors, study concludes

LOS ANGELES — Doctors are fueling the nation’s prescription drug epidemic and represent the primary source of narcotic painkillers for chronic abusers, according to a new government study.

Vitamin supplements can raise cancer, heart risks, government panel warns

LOS ANGELES — If you are taking vitamin supplements to reduce your risk of heart disease or cancer, a government panel of health experts wants you to know that you’re probably wasting your money. In some cases, those vitamins may actually increase your risk of cancer.
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Weather could set off strokes

There might be a link between weather and the risk of suffering a stroke, say researchers who analyzed climate trends and hospital records on millions of Americans.

New research examines how stress knots brain

Stress can damage the brain. The hormones it releases can change the way nerves fire, and send circuits into a dangerous feedback loop, leaving us vulnerable to anxiety, depression and post-traumatic stress disorder.

Lose weight with a friend, study says

For the 78 million American adults who are obese and may be ready to lose a significant amount of weight, a new study has some advice: Don’t go it alone.