Papaya is anti cancer

I have been reading this line many since and since a long time ago even before the internet came to fore – papaya is anti cancer. That common fruit prevents cancer in the human body. Old folks say eat the not so ripe papaya so the sap will be there which is potent in giving the body immunity to cancer.

That is nice to hear if all are true. But unfortunately science cannot put up a strong argument on the matter. Papaya is a fruit that is nice to eat and good for the digestive system. But in preventing cancer, I really do not know.