Human body diseases vary in both severety and diversity. Any body part or function can contract a disease or have a disorder. We are more capable of fighting these diseases today than ever before and medicine is advancing every day. Below are introductions to human body diseases and disorders: Skin Disorders The skin is susceptible to physical injury and to infection by bacteria, virus, fungi, and exposure to sunlight. Almost any teenager can tell you the most common skin disorder: acne. There are other skin problems far more serious than acne, e.g. skin cancers, melanoma, psoriasis and vitiligo. Nervous System Disorders Damage to the nervous system through physical injury or disease can impair both physical and mental function. Brain tumors, Parkinson’s disease and stroke are some of the nervous system conditions. Cardiovascular Disorders Cardiovascular disorders are conditions of the heart and blood vessels, which consist mainly of coronary heart disease (CHD), or coronary artery disease (CAD), hypertension, arrhythmia and heart failure. What we eat and the amount of exercise we get can affect our cardiovascular system. Immune Disorders When the immune system does not function properly, a number of diseases can occur. Th ere are two types of immune system disorders: allergies and autoimmune diseases including juvenile diabetes, rheumatoid arthritis and anemia, etc. and immunodeficiency diseases such as AIDS. Digestive Disorders Most digestive diseases are very complex. Common disorders include hepatitis, heartburn and stomach cancer. Abusing alcohol imposes the greatest risk for digestive diseases. Reproductive Disorders Disorders that may affect the proper functioning of the reproductive system include abnormal hormone secretion, sexually transmitted diseases (STDs) such as syphilis and gonorrhea, and the presence of cancerous tissue in the region. Such problems frequently affect fertility. There are also functional problems caused by infertility or sexual dysfunction. Respiratory Disorders Respiratory disorders, or lung diseases, are disorders such as pneumonia, tuberculosis, chronic bronchitis, lung cancer and others. They can affect people of all ages and both genders. Endocrine Disorders Endocrine system disorders occur either due to too much or too little or sometimes no hormone. These disorders may lead to abnormal growth pattern, diabetes, high cholesterol and triglyceride levels. Endocrine system disorders include hyperthyroidism, growth hormone deficiency and hypothyroidism. Musculoskeletal Disorders Diseases of the musculoskeletal system may result in the inability to walk, sit, or even breathe. The musculoskeletal conditions having the most impact on population health will be presented: back pain, repetitive strain injury (RSI) and osteoarthritis. ( 412 Words )