Potions poisoning and wither.

how do you like the idea of correcting the effects of poisoning and withering? Supposedly the damage from the poisoning depends on the quality of the armor, but poisoning the well for ideas acts on the body, ie on the inside, and armor should not affect damage, and dryness add to the chance of applying the effect of Wither skeleton, supposedly the less armor you have, the more chance that the effect will receive, 0% armor - 100% chance of causing Wither.