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J Comp Neurol 1999
Neurotransmitters and hormones such as serotonin originate from the gut, travelling to the brain where it influences our mood, motivation and appetite
The injection is given subcutaneously or intramuscularly and can be self-administered at home after training
Office of Special Counsel and Merit Systems Protection Board
Plasma levels of malondialdehyde (MDA) were substantially higher and melatonin levels were substantially lower in smokers than non-smokers, which appears that melatonin can lessen the respiratory system damage caused by free radicals brought on by cigarette smoke (67)
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