cures for depression

How the sun can be a cure for depression? (I need a scientific answer a little, please!)?

Im writing an essay for the science of light, and I need to know how the Sun can not cure depression, and perhaps how the lack of sun / light can cause depression. Thank you!

Unraveling the role of Sun in Evidence of depression more than sunlight Affects mood-lifting chemical in the brain NewsDec WebMD Health. 5, 2002 – A sunny day may do more than improve your mood – it can increase levels of a natural antidepressant in the brain. A new study shows that the brain produces more of the lifting of the mood chemical serotonin on sunny days that on darker days. Researchers say the findings provide more evidence that the lack of sunlight and reduced levels of serotonin are important in the development of seasonal affective disorder (SAD). People with SAD symptoms of depression in the winter months when there is less daylight. Symptoms include difficulty concentrating, low energy or fatigue, loss of interest in daily activities, mood swings, sleep and excessive amounts. Serotonin levels were found to be normal in earlier studies people with SAD. But researchers say these studies have focused on serotonin levels in the fluid that circulates around the brain and spine, which can interfere with their results. – During the study, researchers measured the levels of serotonin in the blood vessels leading directly from the brain of a more precise measurement of serotonin levels, they say. The study, by Gavin Lambert Institute Baker Research in Melbourne, Australia, and colleagues, appears in December 7 issue of The Lancet. Samples were taken from 101 healthy men during all four seasons and in relation to various meteorological factors such as temperature, precipitation, hours of sunlight and atmospheric pressure. Researchers found that regardless of the season, the turnover of serotonin in the brain was affected by the amount of sunlight on a given day. And serotonin levels were higher on fine days on overcast or cloudy. In fact, the rate of production of serotonin in the brain was directly related to the duration of sunlight. No other weather were related to serotonin levels. The researchers say their study shows that the prevailing amount of sunlight affects levels clearly serotonin in healthy individuals, but more research is needed to see whether people predisposed to SAD are affected the same way by environmental factors.

Depression Cures That Don’t Work – Murray Rothbard

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