The stupidity in this thread amazes me, congratulations.

Fist of, cancer isn't just caused by shitty foods, in fact its caused by the chemicals inside the food, as well as many other man made and natural causes. Potassium is radioactive and thought to be a major facture in all genetic mutations in the past. You can go and be Amish and still get sskin cancerfrom just being out in the sun. Yes, eating less amd neimg healthier may extend your life but there will always be unknown factors that cause cancers 20 years down the line. We don't know an item is carcinogenic until you get cancer from it.
Secondly, cancers has already been cured, just not all of them. Cured is a very loose term too, people can be cured after a bout of chemotherapy so that is a cure thaat works.
Sugar and alkalies will not work because cancerous cell does not target sugar specifically any different than normal cells. The major problem with a cure is that it is hard to differentiate it from a normal cell. And its not acidic so why would an alkaline neutralize it ?
Finally cancer charities spend money not just on research but on suppirt for syfferers, implying they're money greeding corporations is an insult to the amazing work they do in support and equipment among other things they provide for people. Not all charities even had any research areas and solely work on support.