Mayo Clinic Q and A: How much vitamin D do I need?
2017年4月25日 · Recommendations for how much daily vitamin D adults need through diet have changed over the years. Currently, different recommendations exist. The Institute of Medicine has placed the recommended dietary allowance, or RDA, for vitamin D at 600 international units (IU) per day for young adults and 800 IU per day for adults older than 70.
Mayo Clinic Minute: How much vitamin D do you need?
2017年7月11日 · Studies show that, while most Americans do not get enough vitamin D, a growing portion of people get too much. Finding a happy medium does not have to be tricky. Watch: The Mayo Clinic Minute Journalists: Broadcast-quality video pkg (1:00) is in the downloads. Read the script. Even though it's one of the most important nutrients […]
Mayo Clinic Q and A: Getting enough vitamin D
2018年3月13日 · Certain foods — fortified foods, such as milk and cereal, and fatty fish, such as salmon, tuna and mackerel — also provide vitamin D. Chemical reactions in your liver and kidneys transform vitamin D into forms that your body can use. In general, adults should consume 600 international units of vitamin D a day.
Mayo Clinic Q and A: Osteoporosis and supplements for bone health
2022年12月28日 · Those50 and younger should strive for 400–800 international units daily. Those over 50 should aim for 800–1,000 international units daily; Daily intake goals for calcium include the total amount of calcium from food or supplements combined. Certain people may need more units daily if vitamin D deficiency is detected.
Mayo Clinic Minute: Do you need more vitamin D in the winter?
2023年12月5日 · But, he says, the sun isn't the only source of vitamin D. "There are many foods that have vitamin D. Foods also are fortified with it, such as cereals, orange juices and milk have vitamin D. If you get enough from your sources, such as even eating fish such as tuna or salmon, that's an adequate source," says Dr. Bracamonte.
Low vitamin D levels if you’re lactose intolerant - Mayo Clinic News ...
2017年5月17日 · We can also get vitamin D from sun exposure, but this increases the risk of skin cancer. Therefore, to obtain adequate vitamin D many people may want to take a vitamin D3 supplement." As always, if you have further questions Dr. Hensrud encourages a conversation with a health care provider. Read related articles:
How Much Calcium Do Adults Over 55 Need? - Mayo Clinic News …
2015年10月2日 · Questions about calcium supplements for older adults are in the news. Recent studies published in the British Medical Journal found that extra dietary calcium intake was not associated with fracture reduction and increasing dietary calcium intake does not prevents fractures. However, says Mayo Clinic endocrinologist Dr. Robert Wermers, Americans aren't …
Mayo Clinic Q and A: Does vitamin C help us when we’re sick?
2024年11月4日 · Some people may think they should double up on vitamin C supplements when feeling ill, but more is not always a good thing. Taking too much vitamin C can cause side effects that may make you feel worse, such as nausea, vomiting, stomach cramps, bloating, fatigue, heartburn, headaches, skin flushing and even kidney stones in some people. Make ...
Vitamin D Toxicity Rare in People Who Take Supplements, Mayo …
2015年4月30日 · The IOM-recommended upper limit of vitamin D supplementation for people with low or deficient levels is 4,000 IU a day. It's important for doctors to ask their patients about the doses of vitamin D supplements that they are using, Dr. Thacher says, because even capsules containing as much as 50,000 IU of vitamin D are available without ...
If You Choose to Take Vitamins as Supplements, Stick to the RDA
2011年4月11日 · Interestingly, if you get too much vitamin B6, that can also cause a problem with your nerves. You need just the right amount of B6 for your body to function properly. Fortunately, vitamin B6 is found in a wide variety of foods, such as cereal grains, carrots, peas, spinach, milk, cheese, eggs, fish and flour, so it's uncommon to have a vitamin ...