Hello! Thank you for sharing your concerns â itâs great that you're being proactive about your health.
As a dietitian, Iâll guide you based on current nutritional science and clinical practice.
ð Sunlight &
Vitamin D: Will It Help?
Yes, daily sun exposure can help raise your vitamin D levels, but the time, duration, and skin coverage matter significantly.
You're currently exposing your skin to sunlight at 9:00 AM, which is generally before peak UVB hours. UVB â the spectrum needed for vitamin D synthesis â is most effective between 10 AM and 2 PM. At 9:00 AM, the angle of the sun may not produce sufficient UVB rays, depending on where you live.
ð Recommendation: Shift your sunlight exposure to 10:00 AM to 12:00 PM, ideally with:
At least 25â30% of your body exposed (e.g., arms, chest, back, legs)
15â30 minutes daily, depending on your skin tone
This natural method supports long-term vitamin D maintenance â but it may not be enough alone to correct a deficiency like 24 ng/mL, which is considered insufficient (optimal is 30â50 ng/mL).
ð Do You Need Vitamin D Supplements?
For levels under 30 ng/mL, dietary and sunlight sources are usually not enough to restore levels quickly.
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Clinical guidelines recommend:
Vitamin D3 60,000 IU weekly for 6â8 weeks to replenish stores
Then a daily maintenance dose (usually 1,000â2,000 IU)
You're correct that excess vitamin D without K2 can increase
calcium absorption, which, in high amounts, could strain
kidney function or lead to soft tissue calcification â though this is rare with short-term use and monitored dosing.
To support safe supplementation:
âï¸ Add Vitamin K2 (MK-7 form):
90â200 mcg/day helps direct calcium to bones and teeth, preventing buildup in arteries or kidneys
This is particularly useful if you're taking high-dose D3
Many high-quality supplements now combine D3 + K2, but you can also take them separately if needed.
𧪠What About Your
Testosterone?
Your testosterone is low at 3.27 ng/mL, and vitamin D plays a role in hormonal balance.
Studies show that restoring vitamin D in deficient individuals may support testosterone production, especially when combined with better sleep, strength training, and overall nutrient adequacy (e.g., zinc, omega-3s, magnesium).
So, raising your vitamin D can potentially improve testosterone â itâs a good starting point.
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Summary as Your Dietitian:
Sun Exposure: Move to 10â12 PM daily with more skin exposure
Supplements: Take
Vitamin D3 60,000 IU weekly for 6â8 weeks
Vitamin K2 (MK-7) 90â200 mcg/day (either combined or separate)
Monitoring:
Re-test Vitamin D and testosterone after 8â12 weeks
Optionally monitor serum calcium and
creatinine (kidney function)
Nutrition: Focus on D-rich and hormone-supportive foods:
Fatty fish, egg yolks, mushrooms (UV-exposed), fortified dairy
Zinc-rich foods (pumpkin seeds, lentils, red meat)
Healthy fats (avocados, nuts, seeds, olive oil)