Vitamin D - Mayo Clinic Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy The body can absorb calcium only if it has enough vitamin D Calcium is a major part of bones Vitamin D also has many other uses in the body It supports immune health and helps keep muscles and brain
Vitamin B-12 - Mayo Clinic Having seriously low vitamin B-12 levels, called vitamin B-12 deficiency, isn’t common in the U S People who follow a vegetarian or vegan diet can sometimes have low levels This is because plant foods don't have vitamin B-12 Older adults and people who have had stomach surgery also are at risk because they may not absorb the vitamin as well People with digestive conditions such as celiac
Vitamin D deficiency - Mayo Clinic Not getting enough vitamin D, also called a vitamin D deficiency, can cause your bones to become thin, brittle, bent or bowed during growth More study is needed to understand how vitamin D levels affect chronic illness The recommended amount of vitamin D a day for adults is 600 international units
Peripheral neuropathy - Symptoms and causes - Mayo Clinic Protect against low levels of vitamin B-12 by eating meats, fish, eggs, low-fat dairy foods and fortified cereals If you're vegetarian or vegan, fortified cereals are a good source of vitamin B-12, but talk with your healthcare professional about B-12 supplements Exercise regularly
Iron deficiency anemia - Symptoms causes - Mayo Clinic Iron deficiency anemia is a common type of anemia Anemia is a condition in which the blood doesn't have enough healthy red blood cells Red blood cells carry oxygen to the body's tissues Not getting enough iron can cause iron deficiency So can losing blood from having periods or bleeding inside the body Without iron, the body can't make enough of the part of red blood cells that lets them
Anemia - Symptoms and causes - Mayo Clinic Also, some people can't absorb vitamin B-12 This can lead to vitamin deficiency anemia, also called pernicious anemia Anemia of inflammation Diseases that cause ongoing inflammation can keep the body from making enough red blood cells Examples are cancer, HIV AIDS, rheumatoid arthritis, kidney disease and Crohn's disease Aplastic anemia
Celiac disease - Symptoms and causes - Mayo Clinic The intestinal damage often causes symptoms such as diarrhea, fatigue, weight loss, bloating or anemia It also can lead to serious complications if it is not managed or treated In children, malabsorption can affect growth and development in addition to gastrointestinal symptoms There's no definite cure for celiac disease But for most people, following a strict gluten-free diet can help
Vitamin D toxicity: What if you get too much? - Mayo Clinic 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 hypervitaminosis D
Hyperparathyroidism - Symptoms causes - Mayo Clinic The kidneys take vitamin D and change it into a form that the body can use If the kidneys don't work the way they should, the amount of vitamin D that the body can use may go down, and the calcium level drops Kidney disease that lasts a long time, called chronic kidney disease, is the most common cause of secondary hyperparathyroidism
Vitamin deficiency anemia - Symptoms causes - Mayo Clinic Vitamin deficiency anemia is having too few healthy red blood cells It happens when the body has too little vitamin B-12 and folate Not eating enough foods that have vitamin B-12 and folate can cause vitamin deficiency anemia Or the body might have trouble taking in and using these vitamins Without these nutrients, the body makes red blood cells that are too large and don't work well So