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Examples include: Insulin Growth Hormone Releasing Hormone (GHRH) Oxytocin Glucagon-Like Peptide-1 (GLP-1) Natural peptides regulate essential physiological functions like blood sugar, growth, and appetite

For patients with obesity, significant weight loss can result in restored ovulation, more regular periods, and rebalanced estrogen, a hormone that rises with obesity and can diminish fertility

Decline with age Reduction in NAD+ levels between 20 and 60 years of age, leading to mitochondrial dysfunction and sirtuin deficiency

Those with higher body fat may need a different dosage than leaner men to achieve similar effects