Testosterone declines slowly with age, starting in your 30s
If side effects are severe at this dose, it may indicate sensitivity that warrants an even slower start through microdosing protocols
Injections circumvent this biological bottleneck, delivering therapeutic doses directly where your cells can use them
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Kienesberger S, Cox LM, Livanos A, Zhang XS, Chung J, Perez-Perez GI, Gorkiewicz G, Zechner EL, Blaser MJ (2016) Gastric Helicobacter pylori infection affects local and distant microbial populations and host responses