What causes cancer?

BAD HABITS!
From what I have read and learned I think what causes cancer is bad habits! Bad habits that cause free radical damage, oxidative stress is the path to many diseases. Free radicals are a natural by product and fruits and vegetables provide anti oxidants to neutralize them. However when you consider the Standard American Diet (SAD), pizzas, pies, cakes, and shakes and all the processed foods, meat and dairy and all the toxins and artificial chemicals that go with that -- add to it chemicals in our environment, add to it stress, no exercise, no sunshine or time out doors, obesity -- need I go on! Our bodies do an amazing job to keep us alive but we are just on system overwhelm! 40 years ago in a science class the teacher said something that I have never forgotten.

He said that "cancer is caused by a slight irritation over a long period of time."

Free radicals damage cells, damaged cells, damage DNA, damaged DNA can no longer give proper instructions to cell and manage cell performance, cells replicate out of control. That is cancer.

Now think about that and think about people's habits. All of these bad habits produce "free radicals" or at the very least inhibit the bodies ability to perform. People who smoke don't have a cigarette once in a great while -- it is an every day without fail habit, same with soda, fast food, skipping breakfast, not exercising, eating meat and dairy, not eating fruits and vegetables -- these are every day habits. (fruits, vegetables, water alkaline -- meat, dairy, sugary drinks acidic) It takes alot to change someone's habits! Good news is our bodies respond very well when we nourish ourselves, exercise, sleep, manage stress! We must practice dietary and lifestyle excellence to prevent this and many diet and lifestyle related disease! 

Please refer to my book list for the many authors.