We performed a double-blind, placebo-controlled, dose-response winter trial at 55N. A total of 117 children aged 4-8years were randomly assigned to either placebo, 10, or 20g/day of vitamin D3for 20 weeks. At baseline and endpoint, we measured muscle strength with handgrip dynamometer, ...
French researchers gave adolescents single doses of 200,000 IU’s in the winter with no side effects observed. Dr. Cannell (founder of the non-profit Vitamin D Council) told me that he takes 200,000 IU of vitamin D3 for one day at the first sign of an illness like the flu and ...
Elderly:A study conducted to establish the vitamin D requirements in adults 64 years of age and older during the winter determined a recommended dose between 7.9 and 42.8 mcg daily to maintain a serum 25(OH)D level of 25 ng/mL; an evidence-based review recommends 800 to 1,000 units/day...
The amount of vitamin D you need to treat your deficiency depends on how deficient you are and your risk factors. Your doctor may start you on a higher dose of 6,000 IU of D3 a day. Once your level goes above 30 nanograms per milliliter, you will usually take a 1,000-2,000 IU...
Hi David, today i tried 8000ui of vitamin d. I usually take 4000ui per day. For the first time in 8 years i feel normal, no depression. last time i checked my vitamin d levels were 47 during the winter. i guess this is pretty normal during the winter?
Avoidance of the sun and use of sunscreen: Fears of skin cancer and skin aging mean people spend less time in the sun than in the past, although only 10 minutes of direct summer sun is necessary to make an adequate daily dose of vitamin D. ...
Vitamin D supplements and prevention of cancer and cardiovascular disease. N Engl J Med. 2019;380(1):33-44. doi:10.1056/NEJMoa1809944PubMedGoogle ScholarCrossref 36. Scragg R, Stewart AW, Waayer D, et al. Effect of monthly high-dose vitamin D supplementation on ...
Laboratory data obtained at the end of winter, i.e., between March 1 and the middle of May, are summarized in Table 3. Infant ages averaged 7.1 mo. Multiple regression analysis showed that 25(OH)D concentrations at the end of the w inter were strongly influenced by vD dose (P ...
Meier C, Woitge HW, Witte K, et al. Supplementation with oral vitamin D3 and calcium during winter prevents seasonal bone loss: a randomized controlled open-label prospective trial.J Bone Miner Res. 2004;19(8):1221-1230. doi:10.1359/JBMR.040511 ...
The children – all of whom had a history of atopic dermatitis symptoms worsening either during cold weather or around the transition from autumn to winter – were randomly divided into two groups. One group received a daily vitamin D dose of 1000 IU while the other received a placebo. Both...