I don't think you're using this 100-age rule of thumb thing properly. Max cabin altitude for age thirty is 7000'? Umm, what about all these pilots over thirty? For that matter what about pilots over 60?
Perhaps it should be 100-93 (for example) = 7 = 7000' max cabin alt for a 93 year old. Still sounds like bull though.
Anyway, I don't believe there is any specific rule. Obviously people who are unhealthy, whether due to age or not, should seek their doctor's advice before travelling by air!