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Hazards of nightly sleep-wake-repeat pattern

Sometimes science quantifies something many of us know to be true. So listen up, new parents: Waking up repeatedly to care for a little one isn’t good for your moods and your ability to attend to tasks, and it’s just as bad as not sleeping much at all.

Alzheimer’s drug effective in mice

HARTFORD, Conn. — Researching a new drug compound on mice, Yale School of Medicine researchers were able to reverse the effects of Alzheimer’s on learning and memory, the school announced Tuesday.

Swedish study: Mammograms beneficial in women 75 and up

When a mammogram detects breast cancer in a woman age 75 or older, it’s more likely to be early stage disease that can be treated less aggressively, according to a study of thousands of patients in a Seattle cancer registry.

FDA prepping plan to reduce salt

WASHINGTON — Food companies and restaurants could soon face government pressure to make their foods less salty — a long-awaited federal effort to try to prevent thousands of deaths each year from heart disease and stroke.

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.

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.