MEDLINEPLUS SKIP NAVIGATION NATIONAL LIBRARY OF MEDICINE TOPICS DRUGS TOOLS SEARCH SITE MAP FAQS CUSTOMER SUPPORT HEALTH YOU ARE HERE SHARING FEATURES PLEASE PAGE BASICS SUMMARY START HERE DIAGNOSIS PREVENTION RISK FACTORS THERAPIES LEARN RELATED PLAY LINKS AVAILABLE RESEARCH STATISTICS CLINICAL TRIALS JOURNAL RESOURCES FIND EXPERT FOR YOU TEENAGERS PATIENT NEED TO ATTENTION SMOKE DRINK UNHEALTHY RISKY CHOICES REGULAR MEDICAL CARE CONDITIONS AFFECT PROSTATE CANCER LOW TESTOSTERONE THE MAJOR RISKS FACE COLON CANCER HEART DISEASE SCREENING DISEASES EASIER TAKE CHARGE YOUR DISEASE PREVENTION HEALTH PROMOTION NEARLY HALF INFECTED STUDY FINDS HERE HEALTHIER SKIN POSTPARTUM DEPRESSION TESTOSTERONE ASSOCIATION FOR CLINICAL PREVENT THREATS FOUNDATION FOR MEDICAL EDUCATION HEALTHY ACADEMY OF FAMILY PHYSICIANS SEXUAL HEALTH THERAPY TOP 10 REASONS DOCTOR HEART ACTIVE HEALTHY EATING FOR MEN INSTITUTE DIABETES DIGESTIVE KIDNEY DISEASES BELLY FAT WEIGHT LOSS MATTERS BLADDER NEED TO KNOW ENGLISH SPANISH CANCER DISEASE CONTROL DEPRESSION INSTITUTE OF MENTAL HEALTH REPRODUCTIVE HEALTH INSTITUTE OF CHILD HEALTH HUMAN OSTEOPOROSIS ARTHRITIS MUSCULOSKELETAL SKIN DISEASES ENDOCRINE ASSOCIATION OF CLINICAL CENTER FOR HEALTH UNITED LEADING CAUSES DEATH MALES COHABITATION PREVENTIVE HEALTH CARE TRIALS HORMONAL THERAPY OLDER SEX AND GENDER MALE FEMALE ANDROPAUSE ABSTRACTS LIBRARY MATERNAL HEALTHCARE SERVICES SEVERITY PATTERN BONE MINERAL LOSS LITERACY FAMILY SIZE CROSS AGENCY FOR HEALTHCARE RESEARCH QUALITY PHYSICIAN ONLINE DOCTOR FINDER MEDICAL CENTERS FOR DISEASE CONTROL GUIDE BODY IMAGE TIPS FOR GOOD NUTRITION DIETETICS TOPIC EMAIL UPDATES MEDICAL ENCYCLOPEDIA AGING CHANGES THE MALE REPRODUCTIVE SYSTEM AGE 18 ENLARGED PROSTATE ERECTILE DYSFUNCTION PENIS DISORDERS PROSTATE DISEASES SEXUAL PROBLEMS TESTICULAR CANCER LANGUAGES CHINESE TRADITIONAL DISCLAIMERS HEALTH INFORMATION THE NATIONAL INSTITUTES OF FEDERAL GOVERNMENT AGENCIES DISCLAIMER EXTERNAL LINKS FOLLOW US COPYRIGHT PRIVACY GUIDELINES PLAYERS CONNECT ROCKVILLE PIKE MD 208 DEPARTMENT OF HEALTH AND HUMAN NATIONAL INSTITUTES OF HEALTH LAST