Evolutionary Advantage-Social Context-Depression

Depression: An evolutionary byproduct of immune system?

Depression is common enough -- afflicting one in ten adults in the United States -- that it seems the possibility of depression must be "hard-wired" into our brains. This has led biologists to propose several theories to account for how depression, or behaviors linked to it, can somehow offer an evolutionary advantage. Some previous proposals for the role of depression in evolution have focused on how it affects behavior in a social context. A pair of psychiatrists addresses this puzzle in a different way, tying together depression and resistance to infection. They propose that genetic variations that promote depression arose during evolution because they helped our ancestors fight infection. read more..

source:http://bit.ly/wQIrbj

Monster Black Holes-Spherical Structure-Sleep Disturbances-Hyperactivity-Memory Issues

Hyperactivity in brain may explain multiple symptoms of depression

People with Depression suffer a number of symptoms -- including anxiety, memory issues, and sleep disturbances. Now researchers have found that the brains of depressed people show hyperactivity; The finding sheds new light on the brain dysfunction that causes depression and its wide array of symptoms. read more..

source:http://bit.ly/wG8I4A

Ultra-fast outflows help monster black holes shape their galaxies

A curious correlation between the mass of a galaxy's central black hole and the velocity of stars in a vast, roughly spherical structure known as its bulge has puzzled astronomers for years. Astronomers have now identified a new type of black-hole-driven outflow that appears to be both powerful enough and common enough to explain this link. read more..

source:http://bit.ly/ySgUDZ

Celiac Disease-Healthday News-Depression-Women

Celiac Disease in Women Linked to Depression Risk

WEDNESDAY, Jan. 4 (Healthday News) -- New research shows that Women with celiac disease face a higher risk for also suffering from depression and so-called "disordered eating," regardless of whether they stick to a gluten-free diet. read more..

source:http://yhoo.it/wse7pe

Persistence Is Key to Losing Weight and Keeping It Off

SUNDAY, Jan. 1 (Healthday News) -- Losing weight is one of the most common New Year's resolutions, but changing long-held behaviors is a skill in itself, a medical expert says. read more..

source:http://yhoo.it/vuTaCm