1.   The bad actor in male-pattern hair loss is DHT, a metabolic product of testosterone.

2.   They produce metabolic products that may be lethal to modern bacteria.

3.   By rinsing often, you will avoid a pile-up of the more dangerous days-old-plaque which produces acids and toxins as waste metabolic products.

4.   It neutralizes oxygen free radicals, which are metabolic products in the cell that can damage DNA.

5.   Women who lived with smokers had similarly elevated levels of nicotine and cotinine, a metabolic product of nicotine.