Dr. WEIL, Vitamin D 1000 UI - 100 tabs ( Multi-Pack) Review

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(More customer reviews)I've been taking this brand of vitamin D daily for three years. I live in the north, and don't get outside enough during the day. I don't buy many nutritional supplements, but I love this one. The vitamins are tiny, and I feel the benefits. Here are the reasons why I take vitamin D...
WHAT IS VITAMIN D?
Vitamin D is the Sunshine Vitamin, a fat-soluble hormone the body can make by itself. There are two forms. D2 ergocalciferol is made by plants. D3 cholecalciferol is made in humans when the skin is exposed to UV rays from sunlight.
WHY IS D INCREDIBLY IMPORTANT FOR OPTIMAL HEALTH?
Vitamin D strengthens the immune system. It helps maintain normal blood levels of calcium and phosphorus. It promotes bone mineralization, to prevent or slow osteoporosis, reduce fractures. It protects against serious diseases, rickets, osteomalacia. It provides protection from hypertension, psoriasis, autoimmune diseases, multiple sclerosis and rheumatoid arthritis. It has an important role in cancer prevention, and vitamin D deficiency has been linked to 18 cancers.
SIGNS OF DEFICIENCY?
Vitamin D deficiency is common, especially in northern latitudes. Low levels may be indicated by weak muscles, easy bone fractures, inflammatory conditions, or mood disorders.
HOW MUCH, WHAT KIND?
National Institutes of Health sets minimal daily Adequate Intake at 200 IU for everyone under 50. People 50 to 70 should get 400 IU. Over 70 should get 600 IU. Look for D3, not D2.
DR. WEIL RECOMMENDS?
An optimal daily adult intake of 2,000 IU per day.
VITAMIN D IN FOODS?
It's hard to get quality vitamin D from your diet. Most fortified foods like milk and cereal provide D2, a form much less effective than D3. Some food sources include eggs, salmon, sardines.
RISKS OF TOO MUCH D?
No adverse effects have been seen with supplemental vitamin D intakes up to 10,000 IU daily.
FREE D FROM SUNSHINE?
The best source of vitamin D is sun exposure. Very little exposure is required. If you live in the northern latitudes, exposure during the sunshine months allows the body to stockpile enough D to last the winter. On average, 20 minutes of sun, arms and legs exposed, between 11am-3pm, 3 times a week, March through October, is all you need. If you stay outside longer, use sunscreen.
LEARN MORE ABOUT THE SCIENCE?
Dr. Weil's colleague, Michael F. Holick, M.D. has just published a fantastic new book, "The Vitamin D Solution."
HOW LONG DOES IT TAKE TO "WORK"?
With daily use, most nutritional supplements take 4-8 weeks to start "working." These are not pharmacuticals. You don't pop a pill and feel better in 2 hours. The human body has to regulate these things carefully. And everybody is different. I started feeling sunshine-y around Week 5.

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