I read at least her first reference and it actually concludes that it lowers glioblastoma risk.I have now seen this article:
https://www.news-medical.net/health/Do-NAD-Boosters-Help-You-to-Live-Longer.aspx
"Although NAD boosters are claimed to be safe for humans, it has been found that repeated intake of it can increase the total cholesterol and low-density lipoprotein (LDL)-cholesterol levels in the blood. Moreover, studies have indicated that increased expression of NAMPT (a major NAD+-producing enzyme) is associated with an increased risk of developing potentially fatal brain tumors (glioblastoma). NAMPT promotes rapid tumor growth by increasing the release of inflammatory and oncogenic molecules."
What do you think? (and @Chinmoku)
The key phrase is "wild type mice"' the last reference said mice engineered to get cancer are more susceptible when given NAD+ because of its pro-angiogenic effects presumably.
This goes back to testing your genome I suppose, which everyone should probably do anyway (as with the MTHFR example).