vitamin A

Some vitamins that should not be taken together, or have dosage limitations, include vitamin C with vitamin B-12, vitamin A supplement with vitamin A-rich foods, folic acid (vitamin B9) and vitamin B12, and vitamin E with vitamin K.

Although there’s no single cause for vitamin D deficiency, your overall risk may be higher as a result of certain underlying conditions or lifestyle factors.

Doctors recommend multivitamins for certain vitamin deficiencies. If you're taking a vitamin supplement for any type of vitamin deficiency, you should try to take it at a time when your body can best absorb it.

Vitamins are organic substances that are essential for the proper growth and functioning of the body. Calcium is a mineral essential for healthy bones and is also important for muscle contraction, heart action, and normal blood clotting. Check out the center below for more medical references on vitamins and calcium supplements, including multimedia (slideshows, images, and quizzes), related disease conditions, treatment and diagnosis, medications, and prevention or wellness.

If vitamin B12 deficiency is the cause of premature graying, then it can be reversed with vitamin B12 supplementation.

Ringing in the ears has been linked to vitamin B12 and vitamin D deficiencies. Treating an underlying cause of tinnitus such as a vitamin deficiency may help relieve symptoms.

Vitamin D deficiency has been linked with rickets, cancer, cardiovascular disease, severe asthma in children and cognitive impairment in older adults. Causes include not ingesting enough of the vitamin over time, having limited exposure to sunlight, having dark skin, and obesity. Symptoms include bone pain and muscle weakness. Treatment for vitamin D deficiency involves obtaining more vitamin D through supplements, diet, or exposure to sunlight.

Any deficiency of B vitamins can lead to various health conditions. A diet rich in various types of foods ensures that you get sufficient quantities of B vitamins.

Pernicious anemia is a blood disorder in which the body does not make enough red blood cells due to a lack of vitamin B12 in the blood. Pernicious anemia can develop from a lack of a protein that helps the body absorb vitamin B12, not getting enough B12 in the diet, and certain intestinal conditions that interfere with the absorption of vitamin B12 such as Crohn's disease, celiac sprue, or ulcerative colitis. There is no cure for pernicious anemia, thus treatment is life-long.

Despite the use of vitamin E in skin lightening creams, there is insufficient evidence on whether vitamin E oil can remove dark spots.

Because vitamin K1 and vitamin K2 absorb in the body differently and transport to body tissues differently, they may have different effects on your health.

People most at risk for vitamin B1 deficiency include those who eat a diet high in refined carbohydrates or have alcohol use disorder. Learn about other risk factors for thiamine deficiency, as well as symptoms, causes, and prevention. Check out the center below for more medical references on vitamin deficiencies, including multimedia (slideshows, images, and quizzes), related diseases, treatment, diagnosis, medications, and prevention or wellness.

You should always clear it with your obstetrician before taking any vitamins or supplements while pregnant.

What are the foods highest in Vitamin D? Learn about the best sources to make sure this vitamin is included in your diet.

Vitamin C serums are skincare products that contain L-ascorbic acid, ascorbyl-6-palmitate, or magnesium ascorbyl phosphate. Effective vitamin C products contain between an eight and 20 percent concentration of vitamin C. They may also contain tyrosine, zinc, and vitamin E and be in an opaque bottle.

Several studies have confirmed that vitamin D may help with pain relief in selected cases. The pain-relieving action of vitamin D may be due to the following reasons.

What is vitamin D deficiency? Learn the signs of vitamin D deficiency and what foods you can eat to help prevent vitamin D deficiency.

Most eye health vitamins and supplements are meant for those suffering from age-related macular degeneration (AMD). Otherwise, they have very little effect on other eye diseases.

Vitamin D is an important nutrient that helps your body function properly. The best way to find out if you are getting enough vitamin D through your lifestyle and diet is to take the 25-hydroxy vitamin D blood test.

Vitamins and exercise can lower your risk for heart attack and heart disease. Folic acid, vitamins, and homocysteine levels are interconnected and affect your risk for heart disease or heart attack. For better heart health, avoid the following fried foods, hard margarine, commercial baked goods, most packaged and processed snack foods, high fat dairy, and processed meats such as bacon, sausage, and deli meats.