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couple-112015.jpg A new study shows that the happiest couples only have sex once a week. The study, published in the journal Social Psychological and Personality Science, was based on surveys covering over 30,000 Americans over a span of four decades, claimed to be the first to go against the prevailing belief that more sex equals more happiness.

Those who drink three cups of coffee or more everyday may live longer than those who do not, according to a new study from researchers at Harvard. For the study the researchers collected data from 208,000 people over the course of 30 years. They surveyed the amount of coffee consumption over time and also the causes of death for the roughly 30,000 participants that died during the study.

The use of antibiotics in animal feed is making it harder for doctors to treat potentially deadly infections in children, a report from the American Academy of Pediatrics (AAP) says. The report states that the widespread practice of giving antibiotics to healthy livestock to promote growth and prevent disease among animals is making the drugs ineffective when they are needed to treat infections.

Beef-111415.jpg Those who regularly consume large amounts of red meat may be at an increased risk of developing renal cell carcinoma (RCC), according to a new study from researchers at the University of Texas MD Anderson Cancer Center. For the study the researchers collected data from 659 newly diagnosed RCC patients and another 699 healthy adults.

oldman-111015.jpg Alzheimer's can be detected in neural tissue 20 to 30 years before one first starts noticing lapses in memory, according to new research. According to Harvard's Rudy Tanzi, when brain cells, known as glia, sense the death of other brain cells from plaques and tangles, they assume one thing: infection. In an attempt to fight these "foreign invaders" the brain becomes flooded.

vaccine-110415.jpg One out of every five U.S. pediatricians has dismissed families because parents refused to vaccinate their children, according to a recent study. For the study, published in the journal Pediatrics, researchers conducted a national survey of 815 pediatricians and family doctors between June and October 2012, asking questions about providing vaccinations and prevalence of parental refusal.

cheeseburgers-110215.jpg Television commercials for fast food may be especially effective on children, according to a new study from researchers at the Geisel School of Medicine at Dartmouth. For the study the researchers closely reviewed all of the fast food television advertisements that were released since 2009. They found that many of the major fast food chains focus marketing directly on children.

E-Cigarette-102915.jpg Many pediatricians are now standing in favor of stronger regulations against tobacco and e-cigarettes, according to a new statement by the American Academy of Pediatrics. The group has released its official recommendation that the legal age for tobacco and e-cig purchases be raised from 18 to 21. "Tobacco use continues to be a major health threat to children, adolescents and adults."

pinkribbon-102215.jpg The American Cancer Society is suggesting that women should start getting mammograms at the age of 45. According to new guidelines, published in JAMA, formerly the Journal of the American Medical Association, women should undergo regular screening mammography starting at age 45, women 45 to 54 years of age should be screened annually.

pregnant-101915.jpg Children born to women who experience stress during their pregnancy may be affected later in their lives, according to a new study. The new study, published in the journal Child Development, saw doctors ask 2,900 women in Australia twice during their pregnancies, at 18 weeks and 34 weeks, whether they had experienced stressful events while they were pregnant.

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