Humans
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Health & MedicineDietary stress may compromise bones
Internal conflict about what and how much to eat not only induces production of a stress hormone but also may eventually weaken bones.
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Health & Medicine
Raloxifene doesn’t hike breast density
Estrogen-replacement therapy that includes estrogen increases breast-tissue density among postmenopausal women, but the estrogen-replacement drug raloxifene doesn’t.
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Anthropology
Human ancestors had taste for termites
Incisions on ancient bone implements found in South Africa indicate that human ancestors gathered termites, a protein-rich food source, more than 1 million years ago.
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Health & Medicine
Cocaine link to heart attack bolstered
Regular cocaine use may account for one-fourth of nonfatal heart attacks in people under age 45.
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Health & Medicine
Gene mutation can spur autoimmunity
A mutation of a gene on the X chromosome can lead to a dangerous autoimmune disorder and type I diabetes.
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Health & Medicine
Mending a Broken Heart
Transplants of skeletal-muscle cells may help heal hearts damaged by illness or previous heart attacks.
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Anthropology
Gene, fossil data back diverse human roots
Ancient mitochondrial DNA extracted from Homo sapiens fossils and anatomical links among H. sapiens crania from different regions both support a theory of geographically diverse human origins.
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Health & Medicine
Protein pair induces nerve repair in mice
Mice genetically engineered to make two proteins normally active in early nerve development are able to regrow damaged nerve fibers somewhat in their central nervous systems.
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Health & Medicine
Do Meat and Dairy Harm Aging Bones?
Two studies have contradictory findings about the impacts of animal protein on bones in elderly people.
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Health & Medicine
Vision: The risks of being too fat or too tall
Excess weight or height can have a blinding impact, fostering the development of cataracts.
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