text: some cancers are, some arent. you can reduce risks though by maintaining a healthy weight, staying away from tobacco, eating a diet low in fat and red meats, and staying away from alcohol or drinking it in moderation, and taking reasonable precautions in the sun/not tanning regularly. no matter how hard you try, you cant completely eliminate your risks of cancer but doing what i mentioned can cut your risk in half. dont go crazy though trying to be cancer free.... have some fun in life.