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Body and infection C0513
Contagious diseases CI416
Male specialties C2231
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abdomen acid activity alcohol amphetamines arteries average bacteria barbiturates become bladder blood vessels body bone brain Calories cancer carbohydrates cause cells chemical cholesterol chromosome chronic cigarettes color damage death depends develop diet disease disorders drinking drug eating effects eggs ejaculation energy example exercise factors female fitness fluid genitals glands gonorrhea growth hair heart hernias high blood pressure homosexual hormones illness increase infection inflammation intake intercourse intestine irritation kidney lungs male masturbation menstruation muscle muscular needed nerve nervous system nicotine normal occur organs orgasm oxygen pain penis person physical physical dependence produce prostate protein psychological puberty respiratory result sebaceous gland semen sexual skin sleep smoking somatotype sperm stimulate stomach stress suicide sweat symptoms syphilis teeth testes tissue tobacco Treatment tube tumor types ulcers urethra urine usually uterus vagina vary vitamin weight women