Also results in melanin deficiency, predisposing to skin diseases such as eczema. Given with caution in cases of high blood pressure. Prevents the accumulation of fat in the liver. Provides niacin, which prevents pellagra and mental deficiency. Tryptophan is better for depression than for energy.
Deficiency causes insomnia.
When taken with B3 and C is converted into serotonin, a GHR neurotransmitter. Best taken at night. Deficiency results in negative nitrogen balance in the body. Helps increase sperm count. Now tends to be regarded as an essential as body needs more than it can produce.