i have had a plantar wart on my foot on and off. it goes away when i am right on top of my game nutritionally.
my ex had chronic small warts on his hand. at one point, after being on a bunch of supplements for other things, he ran into some situation i can't recall in detail, but he ended up taking added vitamin C. his warts all went away. i suspect it was not just from the vit C but that C helped him use all the rest of his regimen more effectively.
warts are caused by a virus so if you take a nutritional approach, go antiviral ie multi, zinc, selenium and for good measure, anti-oxidants like A, C, and E8complex, not to mention some anti-inflammatory fish oil.
incidentally i read over a piece on nutrition advice for warts and it read like a handbook for dealing with ms. i guess healthy is healthy