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Another systematic review (95) pooled results of clinical trials testing the prophylactic or therapeutic effect of melatonin for depression in adults, including comorbid conditions

This study also reported elevated citrate synthase activity, which was speculated to reflect enhanced mitochondrial biogenesis

They can also help: Boost your immune system Enhance your mood Increase your ability to concentrate Improve your quality of sleep Speed up your metabolism How Do I Prepare for Vitamin B12 Shots

However, they work in different ways in the body

Movement is essential for reproductive health, and some studies 33 have shown that moderate exercise can improve fertility