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Vitamin D deficiency - the silent energy killer

Got my bloodwork done and my vitamin D was at 18 ng/mL (should be 30-50+). Doctor said this could explain my fatigue, brain fog, and mood issues I've been dealing with for months. I work from home and barely get outside during winter so I guess its not surprising but I had no idea it could affect this much.

Anyone else discover they were deficient? How long did it take to feel better after supplementing?

Mine was at 12 when I got tested. TWELVE. I was basically a zombie for months thinking I was depressed (and maybe I was, partly because of the deficiency). Doctor put me on 50,000 IU weekly for 8 weeks then switched to 5,000 IU daily maintenance.

Started feeling better around week 3-4. By week 8 it was night and day. Energy was back, brain fog lifted, even my mood improved significantly. Get retested in 3 months to make sure your levels are coming up.

This is SO common especially for guys who work office/remote jobs. I'd bet money half the people on this forum are deficient and don't know it. Get your levels checked people - its a simple blood test and the fix is a cheap supplement.

Take it with a fat source (meal, fish oil, etc) for better absorption. This made a big difference for me - my levels barely moved until I started taking D3 with my breakfast eggs instead of on an empty stomach.

Also check magnesium while you're at it. Vitamin D needs magnesium to be properly utilized and a lot of guys are low on both. I take D3 + K2 + magnesium glycinate. The trifecta.

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