Vitamin D - Mayo Clinic
Mar 21, 2025 · Vitamin D is a nutrient the body needs, along with calcium, to build bones and keep them healthy. The body can …
Vitamin B-12 - Mayo Clinic
Aug 13, 2025 · Vitamin B-12 is a vitamin the body uses to make and support healthy nerve cells. It's also used to make healthy red …
Vitamin D Deficiency: Symptoms, Causes, and Treatment - Patient
Jan 26, 2026 · Vitamin D deficiency is common. Discover its symptoms in adults and children, potential causes including lack of …
Vitamin D toxicity: 5 signs you’ve taken too much - Patient
What is vitamin D toxicity? Vitamin D toxicity happens when your body has too much vitamin D, usually caused by taking too many …
Peripheral neuropathy - Symptoms and causes - Mayo Clinic
May 19, 2026 · Protect against low levels of vitamin B-12 by eating meats, fish, eggs, low-fat dairy foods and fortified cereals. If …
Vitamin d deficiency: muscle weakness, twitching, neuropathy-like pain
Mar 22, 2021 · My vitamin-d levels have been good for 3+ weeks now, but muscle weakness and twitching still pretty bad. I am going …
Iron deficiency anemia - Symptoms & causes - Mayo Clinic
Sep 20, 2025 · At first, iron deficiency anemia can be so mild that you don't notice it. But as the amount of iron gets lower and the …
Vitamin A Deficiency: Symptoms, Causes, and Treatment - Patient
Nov 13, 2023 · Vitamin A deficiency is a lack of vitamin A in your diet. Mild deficiency may cause tiredness and increase infection …
Anemia - Symptoms and causes - Mayo Clinic
May 5, 2026 · Also, some people can't absorb vitamin B-12. This can lead to vitamin deficiency anemia, also called pernicious …
Vitamin B12 Deficiency: Symptoms and Treatment - Patient
Jul 4, 2024 · Explore vitamin B12 deficiency and pernicious anaemia, including common symptoms like tiredness, lethargy, and a …