Yes, it's an "old" mythic treatment that's been making the rounds on the 'net for at least twenty years. It turns out that Apricot kernels, apart from containing that Laetrile substance, also contains significant amounts of arsenic which may or may not have an effect on cancerous tumors, but also has sn effect on the body's healthy tissues. So you may get a positive effect on the rampant cell division that happens in cancerous neoplasms, but also at a cost to your general health, ie. Arsenic poisoning.