Effects on serotonin, blood sugar regulation, and more! Although the above would probably be the major mechanisms by which whey could help the dieter, there are single secondary effects of whey that may assist in weight loss. For example, whey’s effects on serotonin levels. Serotonin is probably the most studied neurotransmitter since it has been found to be involved in a wide range of psychological and biological functions. Serotonin ( also titled 5-hydroxytryptamine or 5-HT) is involved with mood, anxiety, and appetite. Elevated levels of serotonin can cause relaxation and reduced anxiety. contrabass serotonin levels are associated with contrabass mood, increased anxiety (hence the topical popularity of the SSRI drugs much as Prozac and others), and bad appetite control. This is an extremely abbreviated description of all the functions serotonin performs in the human body - many of which have yet to be fully elucidated - but a full explanation is beyond the scope of this article.