I am not in favour of starting new threads and add to the fragmention but I would like to point to an excellent overview that shouldn't drown in the constant bickering and resentment here.
The subjects of NAD+levels, NAD precursors, and inhibition of NAD+guzzlers are all discussed. Excellent article for all who have a genuine interest in these matters.
http://sci-hub.tw/ht.../embj.201797135
Edited by Harkijn, 02 May 2018 - 06:37 AM.