Several studies have associated low levels of vitamin D with weight gain. This is because low vitamin D disrupts a hormone called leptin which helps tell you when you're full. This possibly suggests that increasing your vitamin D levels could help you stop overeating.
If your physician determines you have low Vit D levels she or he may put you on high dose vitamin D supplements but we should remember that 15-30 minutes of full sun exposure every day can be very helpful in increasing your vitamin D levels.
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