It affects testosterone levels and decreases the counts of nitrogen oxide molecules. Testosterone is the main male hormone required for sexual development and sexual enhancement. Men who have low levels often have a reduced development, either when they are young or when they reach 40 years. The sex drive decreases and they can not function due to reduced resistance and suffer from little or no erections, unable to give to their partners and leave them unhappy. This is an important reason for the marriage to dissolve and families to separate, interfering with sexual life.