is glutathione the body's primary endogenous antioxidant Potential Role of Pathways in Pathophysiology and Adjunct Treatment of Psychiatric Disorders Frontiers | Lifestyle, Oxidative Stress,

10.1016/j.fcr.2024.109305 97 GuoC.ZhuL.SunH.HanQ.WangS.ZhuJ.et al (2024a)

doi: 10.3389/fmicb.2022.1085214 Received 31 October 2022 Accepted 22 December 2022 Published 11 January 2023 Volume 13 - 2022 Edited by Hans Karl Carlson, Berkeley Lab (DOE), United States Reviewed by John Stolz, Duquesne University, United States

And then there are third sets of nootropics that are more about decreasing oxidative stress, so that it's not necessarily about neurogenesis, but it's about avoiding the death of brain cells

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Neurology 72(21 Supplement 4):S1S136 Masaldan S, Bush AI, Devos D, Rolland AS, Moreau C (2019) Striking while the iron is hot: iron metabolism and ferroptosis in neurodegeneration

However, there is a large body of literature that indicates that dietary carotenoids are cancer preventative (See Table 6)