Despite their dislike of modern technology, the Amish are extremely healthy people. They don't suffer the health atrocities of modern age, and RARELY get cancer! They follow a simple lifestyle, don't use the chemical-laden products popular in American homes. They grow their own organic food and use heirloom seeds, which means non-GMO. Their community don't rely on herbicides, pesticides or chemical fertilizers, and their meat and dairy products don't contain any hormones or antibiotics. The Amish rely on traditional medicine and natural remedies to deal with their medical problems. This limits their exposure to live-damaging pharmaceuticals and devastating side-effects of conventional drugs.
In a few words: Amish people live a carcinogen-free life.