What is the best form of vitamin D3 for absorption?
In our study, the microencapsulated form of vitamin D was the most bioavailable.
How is vitamin D3 produced in the body?
How your body makes vitamin D. The sun’s energy turns a chemical in your skin into vitamin D3, which is carried to your liver and then your kidneys to transform it to active vitamin D. The first stop is in the liver, where vitamin D picks up extra oxygen and hydrogen molecules to become 25-hydroxyvitamin D, or 25(OH)D.
Why is vitamin D not absorbed by the body?
Your digestive tract cannot adequately absorb vitamin D. Certain medical problems, including Crohn’s disease, cystic fibrosis, and celiac disease, can affect your intestine’s ability to absorb vitamin D from the food you eat.
What is the best source of vitamin D3 in supplements?
Few foods are naturally rich in vitamin D3. The best sources are the flesh of fatty fish and fish liver oils. Smaller amounts are found in egg yolks, cheese, and beef liver.
What is vitamin D3 good for in the body?
Vitamin D (ergocalciferol-D2, cholecalciferol-D3, alfacalcidol) is a fat-soluble vitamin that helps your body absorb calcium and phosphorus. Having the right amount of vitamin D, calcium, and phosphorus is important for building and keeping strong bones.
Where is active vitamin D3 produced?
Vitamin D3 is produced in the skin from 7-dehydrocholesterol by UV irradiation, which breaks the B ring to form pre-D3.
How does vitamin D3 get absorbed?
The vitamin D that is consumed in food or as a supplement is absorbed in the part of the small intestine immediately downstream from the stomach. Stomach juices, pancreatic secretions, bile from the liver, the integrity of the wall of the intestine — they all have some influence on how much of the vitamin is absorbed.
What prevents vitamin D3 absorption?
Some factors that may reduce or block its absorption include: Conditions such as celiac disease, chronic pancreatitis, Crohn’s disease, and cystic fibrosis. These can all affect the intestines, preventing them from absorbing vitamin D found in food. BMI (body mass index) higher than 30.