Definition: The term 'arsenic', as used in medicine, refers to a chemical compound that causes damage to the blood cells lining the digestive tract. Definition: The chemical compound arsenic, also known as cadmium, is one of the most commonly found elements in soil and water supplies. It is commonly associated with arsenicosis (also called arsenicosis due to its primary source), a disease affecting about 1 in every 30,000 people worldwide. Arsenic poisoning can lead to severe kidney damage, liver failure, heart problems, and even death if not treated properly. Aging effects: As the body ages, it converts more of the arsenic in soil into cadmium, which further increases the risk of arsenicosis. This is why it's important to consume a variety of foods that contain natural amounts of arsenic and avoid eating contaminated food or water sources.