The problem is you're treating these like signs of cancer when they aren't. People with mold in their house don't necessarily have cancer, people who get shing

The problem is you're treating these like signs of cancer when they aren't. People with mold in their house don't necessarily have cancer, people who get shingles don't necessarily have cancer, aching joints is less than useless as a measure for cancer. You're working backwards, now anything that's incorrect with someone is proof if they ever develop cancer while ignoring everyone who doesn't.