Common questions about vitamin D answered.

Overweight and obese children and teens are more likely to have low vitamin D levels than kids with healthy weights, a new study suggests.

Vitamin D deficiency has been linked to a host of illnesses and conditions, from heart disease and diabetes to certain types of cancer.

Another vitamin has failed to live up to all of its hype. This time it's vitamin D.

When compared with woman who have adequate vitamin D levels, older women with low blood levels of vitamin D may be more prone to pack on the pounds.

New research suggests that women who take high doses of vitamin D during pregnancy have a greatly reduced risk of complications, including gestational diabetes, preterm birth, and infection.

Low levels of vitamin D and depression may go hand-in-hand, according to new research.

Dutch researchers report that newborns with low vitamin D levels have a sixfold higher risk of lung infections with respiratory syncytial virus (RSV).

Find out if vitamin c helps or harms chemotherapy drugs, such as Adriamycin, Platinol, Oncovin, methotrexate, and Gleevec, and their treatment capabilites for cancers.

Access is dwindling for many older, off-patent, essential drugs as companies use an emerging strategy to acquire therapies in niche markets where there are few or no alternatives, and then jack up the price.

Tired of the high drug costs and shortages of lifesaving generic drugs, major hospitals and hospital systems in the United States, including the Mayo Clinic, have come together to create Civica Rx, a not-for-profit generic drug company.

A study in mice reveals an elegant circuit within the developing visual system that helps dictate how the eyes connect to the brain.

Women and some racial and ethnic groups may be low in certain key nutrients, a new government report shows

Patients with Parkinson's disease have a high prevalence of vitamin D insufficiency, but vitamin D levels did not continue to decline as the disease progressed, according to a new study.

A new study suggests that more than three-fourths of people with a variety of cancers have low levels of vitamin D, and the lowest levels are associated with more advanced cancers.

Teens living in the South are found to have low levels of vitamin D, despite the fact that sunshine is ample in that part of the country.

Vitamin D against a placebo in patients with chronic lung disease helps them breathe better and exercise more than those on the dummy pills, according to a small study.

Higher levels of vitamin D are associated with a reduction in cancer risk of more than a 65%, according to a study published online April 6 in PLOS ONE.

The latest study on whether vitamin D can prevent cancer is negative, but there have been many such trials, and the findings have been contradictory.

A new study shows that obese children with lower vitamin D levels may be at higher risk for type 2 diabetes.

The 'largest and most comprehensive observational study to date' provides no evidence of an association between serum vitamin D concentrations and risk for subsequent lung cancer and thus does not support the idea that vitamin D is protective.

Low levels of vitamin B12 may be more prone to age-related memory declines and brain shrinkage.

Vitamin D supplementation may help reduce depressive symptoms, new results of an updated meta-analysis show.

Heart disease and weakened bones are now believed to be additional risk factors in men with low levels of vitamin D.

Low levels of vitamin B6 may be a key factor involved with chronic inflammation in the body.

A new study suggest that vitamin A can stave off melanoma.

New research indicated that children who don't get enough vitamin D may be at increased risk of developing allergies.

Find out why many U.S. kids' vitamin D levels are low, putting them at risk for heart disease, rickets, and weak bones.

The Centers for Disease Control and Prevention has identified a cluster of newborns in Tennessee with late vitamin K deficiency bleeding (VKDB).

Higher circulating levels of 25 hydroxyvitamin D (25[OH]D) up to 100 nmol/L are associated with a significantly lower risk for colorectal cancer (CRC) in women and a nonsignificantly lower risk in men compared with concentrations that are considered deficient for bone health, an international collaborative meta-analysis suggests.

Low levels of vitamin D appear to be linked to cognitive impairment in senior adults, according to two new studies.

New research suggests that women with low vitamin D levels may have an increased risk for the most aggressive breast cancers.

A study finds that African-Americans are more likely than whites to die of heart disease due to a deficiency in vitamin D.

Experts on both sides of the debate say that despite discouraging headlines, it's still smart for some people to take supplements, depending on their individual nutritional needs.

People with low vitamin D levels may be at increased risk of type 2 diabetes, according to the results of a new US epidemiological study.

An expert panel now says that older can reduce their risk for serious falls by exercising regularly and taking vitamin D supplements.

Vitamin D deficiency has been linked to heart disease and type 2 diabetes. Chronic inflammation plays a role in both of these diseases, and most immune cells have receptors for vitamin D.

Researchers have begun the first definitive, large-scale clinical trial to investigate if a vitamin D supplement helps prevent or delay type 2 diabetes in adults who have prediabetes, who are at high risk for developing type 2.

Women who have low levels of vitamin D in their blood during pregnancy increase their odds of having a child with language problems.

Looks like we may have to cross out another supposed way to prevent the common cold.

According to new evidence, vitamin B12 may help protect the brain against Alzheimer's disease.

Early research suggests that patients with chronic hepatitis C infections may improve their treatment response by also receiving vitamin B12.

Individuals with increased levels of circulating homocysteine have faster rates of brain changes associated with aging than other people, whereas higher levels of vitamin B12 are associated with slower rates of brain aging, new research suggests.

Learn about how having higher blood levels of vitamin B6 and the amino acid methionine both appear to reduce lung cancer risk in smokers and nonsmokers.

According to a Spanish study, babies score higher on development tests if their moms get enough vitamin D during pregnancy.

Learn about how sufficient vitamin D levels could reduce risk of a leading cause of blindness on RxList.com

Among people with early-stage multiple sclerosis (MS), those with higher blood levels of vitamin D had better outcomes during 5 years of follow-up.

Researchers say they can now show how vitamin D has the power to protect some people from getting colorectal cancer, otherwise known as bowel cancer.

Taking vitamin D supplements, at a dose of 700-1000 international units per day, may make falling 19% less likely for people age 65 and older.

Abundant quantities of the sunshine vitamin, also known as vitamin D, may lower the risk of colon cancer.

A new study may help explain why ultraviolet light therapy and vitamin D creams prescribed for psoriasis work for so many patients.

According to new research, older people who take vitamin D with calcium may have lower death rates than those who don't.

A study shows that a supplement containing vitamin E and essential fatty acids may help reduce symptoms of premenstrual syndrome (PMS).

Among women, taking vitamin E supplements may not help when it comes to preventing heart failure.

Vitamin E supplements may raise the risk of prostate cancer, according to a new study.

Peripheral Neuropathy Patients Who Take Diabetes Drug May Have Vitamin B12 Deficiency

A study by the National Institutes of Health (NIH) offers hope to patients with nonalcoholic steatohepatitis (NASH).

From an Emory University expert, half or more of adults age 65 and above take daily vitamins and other supplements, but only a fraction actually need them.

A new study suggests that women who live in the southern part of the U.S. are less likely to have ulcerative colitis and Crohn's disease than those who live in the North.

Taking antioxidant supplements vitamin E and selenium for 5 years did not show any effect on the prevention of dementia during a total follow-up of 11 years in a large population of older men in the PREADViSE (Prevention of Alzheimer's Disease by Vitamin E and Selenium) trial.  

Low levels of sun exposure appear to be risk factors for multiple sclerosis and mononucleosis.

A new study suggests that drinking more than two glasses a day may lower how much iron is stored in their bodies, raising the risk for anemia.

The glut of food products -- namely breakfast cereals and snack bars -- pumped up with vitamins and minerals puts children and pregnant women at risk for eating too much of a good thing, concludes a report out Tuesday.

Consumers have become deeply distrustful of their food. There's Samantha Adams, who had her "aha moment" when she happened to read the label of the barbecue sauce she was feeding her 1-year-old.

The US Food and Drug Administration (FDA) has approved calcifediol (Rayaldee, Opko Health, Inc) for the treatment of adults with secondary hyperparathyroidism (SHPT) associated with vitamin D insufficiency (serum total 25-hydroxyvitamin D levels < 30 ng/mL) in stage 3 to 4 chronic kidney disease (CKD), according to a company news release.

A study shows that the calcium supplements that many older women take to boost their bone health may increase their risk for heart disease.

The U.S. Food and Drug Administration is advising consumers and health care professionals not to use any liquid drug or dietary supplement products manufactured by PharmaTech LLC of Davie, Florida, and labeled by Rugby Laboratories, Major Pharmaceuticals and Leader Brands, due to potential contamination with the bacteria Burkholderia cepacia (B. cepacia) and the risk for severe patient infection.

Researchers discover how folate promotes healing in spinal cord injuries.

A number of popular foods are about to lighten up. The FDA is all but banning the use of partially hydrogenated oils, the main source of artery-clogging artificial trans fats, in processed food.

For the second day in a row, House Republican leaders today canceled a scheduled vote on their bill to replace the Affordable Care Act (ACA) because there weren't enough ayes to pass it.

According to the CDC, more than one-half of U.S adults take dietary supplements.

A new mouse model developed by scientists at the U.S. Food and Drug Administration may help in exploring the potential activity of Zika virus vaccines and therapeutics.

Different fatty acids may have different effects on heart health.

According to a Swedish study, middle-aged and older adults may be able to lower their risk of having a stroke by eating low-fat dairy products.

A new multidisciplinary consensus document looks at the lifelong management of hormonal issues in women with previous stroke.

New research shows that some cancers may be promoted by supplements like folic acid and vitamin B12 taken in large doses.

Watch your sugar, use caution with the salt shaker and limit those saturated fats. That's the guidance from the updated U.S. nutritional guidelines, released Thursday by the U.S. Department of Agriculture and the Department of Health and Human Services.

People enjoy the sun. Some have even worshiped it. Sunlight is essential to many living things.

A new study suggests that indoor tanning beds may raise the risk of non-melanoma skin cancers, especially among people who start tanning before they turn 25.

Spending time outside in the summer appears to have a stronger association with reduced future risk for multiple sclerosis (MS) rather than time spent with direct sunlight on the skin, a new study suggests.

Spanish researchers have found that eating foods fried in healthier oils such as olive or sunflower is not linked to heart disease or premature death.

Nonsmokers who stayed out of the sun had a life expectancy similar to smokers who soaked up the most rays, according to researchers who studied nearly 30,000 Swedish women over 20 years.

New research suggests that eating a diet rich in certain vitamins and in omega-3 fatty acids and low in trans fats may be best for brain health.

Dietary interventions, used in conjunction with standard medical therapies, can help adults with psoriasis or psoriatic arthritis reduce disease severity, according to a literature review from the Medical Board of the National Psoriasis Foundation.

Taking multivitamin/mineral (MVM) supplements does not prevent myocardial infarction, stroke, or death from a cardiovascular cause, according to a comprehensive meta-analytic review of relevant research.

After decades of decline, rheumatoid arthritis (RA) is on the rise among women, according to a new study.

A new study shows that indoor tanners are close to 70% more likely to develop the most common type of skin cancer before their 40th birthday.

Discover how the new blood-thinning drugs Eliquis, Xarelto, and Pradaxa compare to warfarin.

According to a new study, multivitamins may be link to an increased risk for breast cancer.

Illegal synthetic cannabis products laced with rat poison continue to be sold in the United States and pose a significant health risk not only to people who use these products but also the US blood supply, the US Food and Drug Administration (FDA) said this week in an update on the ongoing problem.

The U.S. Food and Drug Administration announced its preliminary determination that partially hydrogenated oils (PHOs), the primary dietary source of artificial trans fat in processed foods, are not “generally recognized as safe” for use in food.

Taking a widely used antidepressant during the first trimester of pregnancy is associated with an increased risk for congenital and cardiac malformations, concludes a systematic review and meta-analysis by Canadian researchers.

The FDA has approved Clinolipid (lipid injectable emulsion, USP) for intravenous feeding in adult patients, providing a source of calories and essential fatty acids for adult patients who are unable to eat or drink.