Serotonin is a very important substance for the human brain, because it is considered to be the most essential natural antidepressant the body can make. Serotonin effects are not only very pleasant, but they help us behave normally, sleep well, maintain good relations with people around us, and, generally, they aid human beings in major depression diagnosis and controlling their most important emotions. However, as plenty of serotonin information points out, one cannot enjoy the effects of the neurotransmitter if the brain cannot produce enough natural antidepressant. Serotonin needs a particular amino-acid, called tryptophan, that can only be obtained from food. Also, one must keep in mind that using drugs such as ecstasy can lead to a temporary serotonin MDMA high, but, afterwards, their reserve will be empty, and it will take some time to replenish it. Exposure to sunlight and depression The way serotonin is processed by our brains is very important, because not only the levels of this neurotransmitter are important, but also other processes, like how fast the excess of serotonin is absorbed back into the synapses, before being delivered again. As the serotonin information provided by scientific studies shows, there seems to be a direct link between exposure to sunlight and depression. People that spend at least half an hour outside, no matter the season, are less likely to become depressed, than those that stay indoors all the time. Seasonal depression is often linked to the low exposure to bright light – that is provided by sunrays ...

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