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  2. Vitamin D - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D

    Vitamin D receptor regulated genes involved in vitamin D metabolism are CYP27B1, which encodes the enzyme that produces active vitamin D. [209] [210] and CYP24A1, which encodes the enzyme responsible for degrading active vitamin D, [209] [210] In the area of calcium homeostasis and bone metabolism, several genes are regulated by vitamin D.

  3. Vitamin D deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_D_deficiency

    Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.

  4. Human nutrition - Wikipedia

    en.wikipedia.org/wiki/Human_nutrition

    Older adults typically consume less calcium, around 600 mg/day, which heightens their susceptibility to fractures. For optimal bone health, a calcium intake of 1000–1200 mg/day is recommended, along with 800 IU/day of vitamin D3 for those with adequate sun exposure, and up to 2000 IU/day for those with limited sun exposure or obesity.

  5. 8 vitamins and supplements for weight loss backed by science

    www.aol.com/8-vitamins-supplements-weight-loss...

    But people with a vitamin B12 deficiency may see a metabolism boost. 2. Vitamin D. ... including postmenopausal women, older adults, people who don't consume dairy products because of allergies or ...

  6. Dietitians Say These Are the Best Diets for Weight Loss in 2025

    www.aol.com/dietitians-best-diets-weight-loss...

    Eating a diet rich in fish and other seafood has several benefits due to its nutrient profile (rich in vitamin D and omega-3 fatty acids), protein content, and low-calorie density.

  7. What Is a Calorie Deficit & How Does It Really Impact Weight ...

    www.aol.com/calorie-deficit-does-really-impact...

    Inadequate calorie intake, along with low calcium and vitamin D intake, can increase the risk of bone fractures over time. Reduced metabolism. Ongoing calorie deficits can slow down your energy burn.