Other, smaller trials in patients who already have Alzheimers point both ways, with Edison et al reporting better executive scores and less temporal and whole-brain atrophy on liraglutide, while Gejl (n=38, 6 mo follow-up) and Mullins (n=21, 1.5 yrs follow-up) were neutral to negative, which is exactly what you expect from studies that are short, and not powered to read a slow, insidious disease
DTT is generally included at low millimolar levels in most cell lysis and protein extraction protocols and at high millimolar concentrations in protein reduction methods
Oxidative stress in rat testis and epididymis under intermittent hypobaric hypoxia: protective role of ascorbate supplementation
(PubMed) Valko M, Morris H, Cronin MT
Testosterone therapy can reduce sperm production during use, potentially lowering a mans fertility
Note on humans: These effects are not established in humans no completed clinical efficacy trials support the touted physique uses