Humans

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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.
By Nathan Seppa - 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.
By Nathan Seppa - Health & Medicine
Mending a Broken Heart
Transplants of skeletal-muscle cells may help heal hearts damaged by illness or previous heart attacks.
- 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.
By Bruce Bower - 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.
By Nathan Seppa - 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.
By Janet Raloff - 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.
By Janet Raloff - Health & Medicine
Lupus in Depth
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