this is a studies on genes, heredity, and genetic variation in any living organism. most of the time the diseases and disorders are passed down from generation to generation. the gene that u get for this disorder of the way the DNA codes for a known cellular function or process.


this is the branch of public health that is concerned with all aspects of the natural and built environment that may affect human health. Other terms referring to or concerning environmental health are environmental public health, and public health protection.

                        Lifestyle choices

If you smoke,  is often the single most effective thing that you can do to reduce your risk of future illness. The risk to health falls rapidly as soon as you stop smoking. If you find it hard to stop smoking, then see your practice nurse for help. Medication may be advised to help you to stop.

                         down syndrome

Down syndrome is a chromosomal disorder that includes a combination of birth defects. Affected individuals have some degree of intellectual disability, characteristic facial features. Down syndrome is one of the most common genetic birth defects.

                              lead poisoning

Lead interferes with a variety of body processes and is toxic to many organs and tissues including the heart, bones, instance. It interferes with the development of the nervous system and is therefore particularly toxic to children, causing potentially permanent learning and behavior disorders.


this is a life disictrion  that you have to make as a person. Cigarettes cause cancer. Smoking is the number one cause of deaths due to lung cancer, emphysema, and other serious diseases.