If you say 'anti-aging,' how anti would it have to be, really? My guess is not much. Any amount of sunscreen could be considered anti-aging.
We've been using 'rejuvenate,' meaning to restore youth, to make young again, as a verb for at least 200 years.
Almost any word can be drafted to serve as a verb, even words we think of as eternal and unchanging, stuck in their more traditional roles.
All language is a popularity contest.
The use of food metaphors is really well established English... Somebody is a peach, a hot tamale.
Objections to verbification in English tend to be motivated by personal taste, not clarity. Verbed words are usually easily understood. When a word like 'friend' is declared not a verb, the problem isn't that it's confusing; it's that the protester finds it deeply annoying.
