What is Dr Berg recommendation for vitamin D?
The Vitamin D Council stated that healthy adults need 2000IU of vitamin D per day if they're getting little or no sun. Other experts recommend getting 400-800IU per day.
- Spend time in sunlight. Vitamin D is often referred to as “the sunshine vitamin” because the sun is one of the best sources of this nutrient. ...
- Consume fatty fish and seafood. ...
- Eat more mushrooms. ...
- Include egg yolks in your diet. ...
- Eat fortified foods. ...
- Take a supplement. ...
- Try a UV lamp.
Mayo Clinic recommends that adults get at least the RDA of 600 IU. However, 1,000 to 2,000 IU per day of vitamin D from a supplement is generally safe, should help people achieve an adequate blood level of vitamin D, and may have additional health benefits.
Unless your doctor recommends it, avoid taking more than 4,000 IU per day, which is considered the safe upper limit.
You want to choose a supplement that has vitamin D3, according to Bogden. “Vitamin D3 cholecalciferol is the most absorbable and potent form, [whereas] Vitamin D2 (ergocalciferol) is typically plant-based and not as effective at raising vitamin D levels in the body and thus is not recommended as often,” she explains.
Choosing the Best Vitamin D Supplement for Your Health
If you choose to go the supplement route, Clifford recommends taking around 400 to 800 IU of vitamin D3 (cholecalciferol) per day. “Vitamin D3 is the form that is already stored in the body, so some studies have found it to be more effective,” Clifford says.
- You don't get enough vitamin D in your diet.
- You don't absorb enough vitamin D from food (a malabsorption problem)
- You don't get enough exposure to sunlight.
- Your liver or kidneys cannot convert vitamin D to its active form in the body.
...
Weight loss surgery.
- Oral steroids.
- Orlistat, a weight-loss drug.
- Statins.
- Diuretics.
While the best timing has not been established, scientific data to confirm anecdotal reports that supplementing at night may interfere with sleep is unavailable. Current research suggests you can fit vitamin D into your routine whenever you prefer.
There are quite a few differences between vitamin D and vitamin D3, but the main difference between them is that vitamin D is a fat-soluble vitamin that regulates calcium and phosphorous levels in the body, whereas the vitamin D3 is the natural form of vitamin D produced by the body from sunlight.
Is vitamin D3 the same as vitamin D?
What's the difference between vitamin D and vitamin D3? There are two possible forms of vitamin D in the human body: vitamin D2 and vitamin D3. Both D2 and D3 are simply called “vitamin D,” so there's no meaningful difference between vitamin D3 and just vitamin D.
The main consequence of vitamin D toxicity is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones.

Since vitamin D helps calcium absorption, the toxic effects from high doses often result from high calcium levels in your blood. That can interfere with heart and muscle function (Sadiq, 2020). Common side effects of vitamin D overdose include nausea, vomiting, muscle pain, and frequent urination (Sizar, 2020).
The fat-soluble vitamins A and D are the most likely to cause toxicity symptoms if you consume them in high amounts.
In summary, long-term supplementation with vitamin D3 in doses ranging from 5000 to 50,000 IUs/day appears to be safe.
Which vitamin D does Joe Rogan take and how much? Rogan takes 5,000 IUs of vitamin D daily. He has said he takes the Thorne vitamin D supplement.
Current recommendations from the Institute of Medicine (1997) call for 200 international units (IU) [5.0 micrograms (µg)] of vitamin D daily from birth through age 50, 400 IU (10 µg) for those aged 51–70 years, and 600 IU (15 µg) for those older than 70 years. According to the Dietary Guidelines for Americans (U.S.
In general, adults are advised to take a supplement containing 800 international units (20 micrograms) of vitamin D per day to maintain a normal vitamin D level. Older people who are confined indoors may have vitamin D deficiency even at this intake level.
Joe Rogan makes sure to take his Vitamin D supplements. It is mainly taken from sun exposure but Rogan supplements with Solgar Vitamin D3 5000IU softgels.
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