Big time turnoff. Many of them receive funding from companies who make profits from cancer causing things, so the most they'll say in terms of prevention is don't smoke and maybe exercise and eat right. They're not interested in a cure, they're interested in profits. The sad thing is the people doing all the hard work believe it's a good cause, but these fat cats are profiting big time.
I recall a guilt trip question when I was at a store "would you like to donate a dollar to save a child's life". Of course I'd donate money to save a child's life, but the reality is that's not where the money goes. Truth be told there's more than enough money, just not enough desire to get rid of this big money making disease. It sickens me and I know people give because they believe these people are doing the right thing, but they're lying for profit.