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First, sufficient iron is necessary to maintain testosterone synthesis and spermatogenesis [5], and second, excess iron affects sperm quality by inducing oxidative stress and lipid peroxidation, thus leading to male reproductive dysfunction [6, 7]

NNMT is expressed in multiple tissues but is particularly abundant in adipose and hepatic cells, where it participates in nicotinamide utilization and impacts NAD-related pathways

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These include ROS scavengers, collagen fiber organizing compounds, and anti-inflammatory peptides: Peptides such as carnosine (Product: 4030364 ), anserine (Product: 4027810 L-Anserine nitrate) and carcinine (Product: 4026204) are histidine dipepeptides with antioxidant activity