Feb 20, 2025 · Vitamin D toxicity is a rare condition that happens when too much vitamin D is in the body. The condition can have serious effects on health. Another name for it is …

Mar 21, 2025 · Vitamin D isn't in many foods unless it's added. It's added to fortified milk and cereal. And it's in fish such as salmon, mackerel, and sardines. The body also makes vitamin …

Apr 25, 2017 · However, 1,000 to 2,000 IU per day of vitamin D from a supplement is generally safe, should help people achieve an adequate blood level of vitamin D, and may have …

Apr 30, 2015 · Too much calcium in the blood can cause weakness, lead to kidney stones, and interfere with the heart and brain, and even be life threatening. The Mayo researchers also …

Feb 20, 2025 · Vitamin C is an essential nutrient, but you can get too much of it. If you're an adult, limit yourself to no more than 2,000 milligrams (mg) of vitamin C a day. The recommended …

Mar 13, 2018 · Even 600 international units a day will correct a deficiency fairly quickly. However, taking too much vitamin D can overly increase your absorption of calcium, leading to problems …

Apr 17, 2025 · Only take the recommended amount. Taking too much vitamin A can cause major harm. Vitamin A deficiency. People who have low levels of vitamin A, called vitamin A …

Mar 8, 2024 · Most often, hypercalcemia happens after one or more of the parathyroid glands make too much hormone. These four tiny glands are in the neck, near the thyroid gland. Other …

Dec 28, 2022 · A calcium-rich diet is important to maintain optimal bone health and prevent osteoporosis. So, too, is vitamin D, which helps the body absorb calcium to be deposited into …

Aug 13, 2025 · Vitamin B-12 supplements also are suggested for women who are pregnant, who are breastfeeding and not using any formula, or who follow vegetarian or vegan diets. Taking …