Vitamin D: What's the "right" level? - Harvard Health
2020年4月16日 · Based on their analysis, a more appropriate cutoff for vitamin D deficiency would be much lower, 12.5 ng/mL. They examined a massive amount of data from the National Health and Nutrition Examination Survey (NHANES) for 2007 through 2010 and found that less than 6% of Americans had vitamin D levels less than 12.5.
Truly Optimal Vitamin D Levels Are Higher Than You Might Think
2021年9月19日 · While the clinical 25 (OH)D level is 30 ng/ml, leading functional medicine experts recommend achieving and maintaining vitamin D levels of 50 ng/ml or higher for optimal whole-body health.
Normal vitamin D levels by age, sources, and toxicity - Medical News Today
2023年12月21日 · Generally adequate vitamin D levels in the blood are 20 ng/ml or above for adults. People aged 1–70 years should aim to get at least 15 mcg or 600 IU of vitamin D per day. Those who are...
Vitamin D - Health Professional Fact Sheet - Office of Dietary ...
Vitamin D deficiency is associated with vascular dysfunction, arterial stiffening, left ventricular hypertrophy, and hyperlipidemia . For these reasons, vitamin D has been linked to heart health and risk of CVD. Observational studies support an association between higher serum 25(OH)D levels and a lower risk of CVD incidence and mortality.
What Is the Optimal Vitamin D Level? - NutritionFacts.org
2019年4月30日 · If everyone took 2,000 units of vitamin D a day, it could shift the curve from average blood levels in the mid-50s to about a 110 nmol/L (44 ng/ml), which some estimate could add years to our life expectancy. Data derived from randomized clinical trials have convinced some influential experts, such as Harvard’s Chair of Nutrition, that we ...
Vitamin D - Mayo Clinic
2023年8月10日 · The recommended daily amount of vitamin D is 400 international units (IU) for children up to age 12 months, 600 IU for people ages 1 to 70 years, and 800 IU for people over 70 years. What the research says
Vitamin D Dosing: Basic Principles and a Brief Algorithm (2021 …
Therefore, such patients could be advised to start taking moderate vitamin D doses (e.g., 4000 IU/day for adults), and their 25-OH-D levels could be checked later. The proposed algorithm also comprises vitamin D dosing principles when baseline 25OH-D levels are known. Keywords: vitamin D, calcidiol, supplementation, COVID-19. 1. Introduction.
How Much Vitamin D Should You Take For Optimal Health?
2023年6月23日 · Vitamin D recommended intake is 400–800 IU/day or 10–20 micrograms, depending on your age. What are the optimal blood levels of vitamin D? Doctors assess blood levels of vitamin D by...
How much vitamin D do you need? - Harvard Health
2019年1月31日 · While some people argue for much higher levels, the IOM report concluded that vitamin D blood levels above 20 ng/ml are adequate for maintaining healthy bones, and that most people in the United States have values in that range.
Vitamin D - Consumer - Office of Dietary Supplements (ODS)
Health Professional. Other Resources. Table of Contents. What is vitamin D and what does it do? How much vitamin D do I need? What foods provide vitamin D? Can I get vitamin D from the sun? What kinds of vitamin D dietary supplements are available? Am I getting enough vitamin D? What happens if I don’t get enough vitamin D?