How can you get diseases?

You can get infectious disease if you contact pathogens from the air, from insect bites, touching someone or something that has pathologic organisms on them, drinking contaminated water or eating contaminated foods, having unprotected sex, kissing, eating after someone else, not washing hands enough. Other diseases can be inherited or the predisposition for them can be genetic. Some diseases are caused by wear and tear on the systems of the body caused simply by age. Diseases and disorders can be caused by congenital malformations or birth trauma. Diseases and infections can be secondary to injury and trauma. Organs and body systems can be affected by toxins and poisons and they can cause organ malfunction or total failure and result in associated diseases and disorders. The the list could go on forever. When you look at all of the things that can kill you, it is a wonder we make it for more than a year, but we do thanks to the adaptations and disease fighting properties of our amazing bodies.