The development of civilization increased problems one doesnt want to reveal, human social is more and more civilized, but the males potential is a in a recession step by step. Testosterone is males main androgen, was mostly secreted by the Leydig cells, can increase the excitement of central cortex, play a role in galvanizing males potential.
      However, excessive level free radicals in testicular will damage testicular tissue, especially damage Leydig cells caused reducing of testosterones synthesis and secretion.
      What is free radicals? It is a class of atoms or atom groups with unpaired electrons, has a active chemical property. Under normal situation, in males reproductive system, such as sperm and semen, it is rich in antioxidants and antioxidant enzymes, they can eliminate the excessive free radicals, protect the function of normal sperm. When substance that free radical produced is more than scavenging ability, free radicals will attack the sperm, damage sperm membrane, then sperms are damaged and even death, cause males potential declined. 
      In the past half century, mens semen quality decreased significantly, the number of sperm reduced, the number of infertility increasing. The important factor result in deterioration of male reproductive health is the high content of free radicals in vivo.
      If the human body produces too many free radicals, it will lead to tissue damaged, speed up humans aging, cause or aggravate cancer, cardiovascular, crebrovascular diseases, asthma, emphysema, cataracts, ulcer disease, Parkinsons syndrome, rheumatoid arthritis, etc. Latest study confirms that free Radical is a killer of mens potential. Smoking, drinking, staying up late or the existence of reproductive tract infections, contact with chemical substances containing phenol and lead, As well as the environment,or under the circumstances ionizing radiation enhanced, free radicals in the reproductive system increased significantly, mens reproductive health were damaged.
      Eliminate excessive free radicals is important to protect mens health. So, how can we achieve it? Vitamin C, vitamin E and vitamin A play an important role in physiological, is also an effective material eliminating free radicals. They are widely found in vegetables, fruits and other foods, usually eat such foods may help to eliminate excessive free radicals in vivo. However, in nature, the content of such foods is limited, for men have more serious problem, it is obviously in shortage.
      In recent years, the clinical findings that a mans potential is enormous, but in most cases are in "hibernation", need effective excitation to wake it up. Chinas medical leader, Yu Liang doctor believed we was in a wrong way that we neglected scavenging the human bodys free radical and only focused on nourishing kidney to improve the secretion of pituitary function. Free radicals are constantly produced during bodys metabolism, they have a high degree of activity of toxic substances, so we need to eliminate free radicals quickly, enhance the activity of inducible enzyme to allow men become relaxed.