Adrenal glands can affect our mental function. Adrenal fatigue causes chronic mental fatigue, depression, mental slowing, anxiety, cravings for salty foods, overuse of stimulants like caffeine, difficulty in getting up early, and inability to lose weight. The function of the adrenal glands tends to degrade as one gets older, with variations in the rate of the degeneration due to genetic and environmental factors. Environmental factors include stress, diet, pollutants, and habit. For example, caffeine overuse and smoking negatively affect the organs because they accelerate the exhaustion of key nutrients that prevent adrenal fatigue.
Yong Han Lee, Re Vitamins of Charleswood, Facebook.com/ReVitamins