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Answer: Results vary by skin type, but users typically notice brighter, smoother skin within 23 weeks, with more visible improvement in dark spots after 46 weeks of consistent use

A separate 2023 pilot study in the International Journal of Dermatology used 1200mg IV weekly for 10 weeks and reported 22.4% melanin reduction with sustained effect at 12-week follow-up

However, the role of age as a risk factor for depression remains controversial

Adenocarcinoma is the most common type of lung cancer in the United States and Japan

I would say all sleep researchers that I know do not recommend melatonin, except under extreme conditions of jet lag where you absolutely have to fall asleep