Another top pick from Dr. Kahn, this lemon-like fruit grows on trees on one region of Southern Italy. Bergamot has been shown in a 2015 study published in the journal PharmaNutrition to improve erectile dysfunction in men who also have diabetes mellitus. According to Kahn, such findings may be the result of bergamot also supporting healthy blood sugar, blood pressure, and blood cholesterol, while also having powerful antioxidant properties known to improve endothelial function—the lining of your blood vessels and key to cardiovascular health.
Production of serotonin is closely linked to the availability of vitamin B6 and the amino acid tryptophan . If our diet lacks sufficient vitamins, we run a greater risk of serotonin deficiency. We may experience a dip in serotonin in relation to physiological causes, digestive disorders and also stress, since high levels of the stress hormone cortisol rob us of serotonin. When we measure our current lifestyle against all the elements necessary for the body’s natural production of serotonin, add in chronic stress — one of the main causes of serotonin depletion — it’s no wonder many of us suffer from depleted serotonin.