Vitamin D

Vitamin D is a nutrient that the body needs in small amounts to function and stay healthy. Vitamin D helps the body use calcium and phosphorus to make strong bones and teeth. It is fat-soluble (can dissolve in fats and oils) and is found in fatty fish, egg yolks, and dairy products. Skin exposed to sunshine can also make vitamin D. Not enough vitamin D can cause a bone disease called rickets. It is being studied in the prevention and treatment of some types of cancer. Also called cholecalciferol.

What is Vitamin D?

Vitamin D is a fat-soluble vitamin that is important for strong bones, muscles, and general good health.

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Vitamin D Deficiency

Vitamin Malabsorption: A Comprehensive Guide from A to K

Vitamin D and Cancer

Sun Exposure - Positive and Negative Effects

Vitamin D Overdose

The Connection Between Vitamin D and Mental Health

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The Role of Vitamin D in Hormonal Balance

Taking Calcium and Vitamin D for Osteoporosis

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Latest Vitamin D News and Research

Decline in vitamin D levels observed during the Covid-19 pandemic

Routine data from laboratories reveal a decline in vitamin D levels during the Covid-19 pandemic, especially in older women and urban dwellers.

21 Oct 2025

Heavy drinking fuels Alzheimer’s disease by igniting brain inflammation and protein damage

Chronic alcohol use accelerates Alzheimer’s disease (AD) progression by intensifying oxidative stress, neuroinflammation, and amyloid-tau pathology through shared molecular pathways. The review highlights emerging therapies, targeting TLR4, GSK-3β, and metabolic dysfunction, that may mitigate alcohol-induced neurodegeneration.

20 Oct 2025

$Yogurt’s impact on bone health falls short of fracture protection, review finds$

Yogurt’s impact on bone health falls short of fracture protection, review finds

This systematic review and meta-analysis found that while yogurt consumption shows a modest positive association with bone health markers, its effect on bone mineral density and fracture prevention in adults is clinically negligible. Current evidence is based solely on observational studies, with low certainty and limited characterization of yogurt products.

19 Oct 2025

ALS and MS share striking geographic patterns, research shows

A new study published in Nature's Scientific Reports indicates that amyotrophic lateral sclerosis (ALS) and multiple sclerosis (MS) have an extremely high geographic association, even after controlling for race, gender, wealth, latitude, and access to neurological healthcare.

15 Oct 2025

Why brittle bones aren’t just a woman’s problem

Ronald Klein was biking around his neighborhood in North Wales, Pennsylvania, in 2006 and tried to jump a curb. "But I was going too slow — I didn't have enough momentum," he recalled.

14 Oct 2025

Does yogurt strengthen your bones?

Researchers review the impact of yogurt consumption on bone health in healthy adults.

3 Oct 2025

Can nut-based milks match dairy for safety, nutrition and flavor?

Tree nut-based beverages offer healthy fats but lack protein. Innovations in fortification and fermentation could enhance their nutritional value.

3 Oct 2025

Red meat in healthy diet linked to better brain nutrients and gut diversity

A study of 3,600+ participants reveals red meat in high-HEI diets enhances brain-supporting nutrients without disrupting gut health or mental well-being.

2 Oct 2025

Early-life dietary habits linked to elevated asthma risk among children

Childhood asthma, a chronic inflammatory condition affecting millions worldwide, may be shaped not only by genetics and environment but also by what children prefer to eat.

30 Sep 2025

Consumption of ultra-processed foods may exacerbate disease activity in early multiple sclerosis

Higher intake of ultra-processed foods (UPFs) may exacerbate disease activity in early multiple sclerosis (MS), according to new research presented at the 41st Congress of the European Committee for Treatment and Research in Multiple Sclerosis (ECTRIMS 2025).

24 Sep 2025

Vitamin D and multivitamins in pregnancy may be linked to lower ADHD and ASD traits

Maternal intake of vitamin D and multivitamins during pregnancy may lower ADHD and autism traits in children, emphasizing the role of nutrition in development.

19 Sep 2025

Vitamin D2 supplementation linked to decrease in natural vitamin D3 concentration

Taking vitamin D2 might lower the body's levels of the more efficient form of vitamin D, vitamin D3, according to new research from the University of Surrey, John Innes Centre and Quadram Institute Bioscience.

18 Sep 2025

Fitness study shows exercise at work can cut chronic disease risks

Researchers evaluate the efficacy of this exercise-based workplace health promotion program at the University of L’Aqulia.

11 Sep 2025

Mushrooms deliver nutrition medicine and sustainability solutions in one package

This Food Science & Nutrition review highlights mushrooms as nutrient-rich functional foods packed with bioactive compounds that support human health. It explores their therapeutic, industrial, and environmental applications, from disease prevention and drug discovery to bioremediation and bioenergy.

8 Sep 2025

Can saliva and tears replace blood tests for vitamin D and glucose?

Tears and saliva may offer new ways to monitor blood glucose and vitamin D levels, suggesting less invasive methods for managing chronic health conditions.

2 Sep 2025

Gut disorders forecast Alzheimer’s and Parkinson’s risk years before diagnosis

Study maps clinical, genetic, and proteomic links between gut-brain disorders and neurodegeneration, showing how diabetes, vitamin D deficiency, and bowel disorders forecast Alzheimer’s and Parkinson’s years in advance. Multimodal models in biobanks highlight early detection and personalized prevention opportunities.

28 Aug 2025

Most alternative treatments for autism lack reliable evidence

The most comprehensive quantitative review of research into complementary and alternative treatments for autism has found no strong evidence to support their use, and that the safety of these treatments was rarely assessed.

28 Aug 2025

Can eating yogurt every week lower your type 2 diabetes risk?

Regular yogurt consumption is linked with a lower risk of type 2 diabetes, according to credible but limited scientific evidence. The FDA has approved a qualified health claim in 2024, marking yogurt as a promising food-based tool for public health.

26 Aug 2025

Can diet alone slow brain aging? Scientists say evidence is still too weak

Researchers reviewing evidence in the Annual Review of Nutrition find that healthy dietary patterns may support brain aging, but caution that scientific enthusiasm currently outpaces solid proof. Multidomain strategies combining diet with exercise, cognitive training, and vascular health show greater promise.

25 Aug 2025

Autism study shows vitamin D and iron deficiencies affect up to 40% of children

Researchers in Singapore found that 30–40% of children with autism spectrum disorder have vitamin D or iron deficiencies, regardless of eating habits. Age and ethnicity increased vitamin D risk, while picky eating was not a reliable predictor.

25 Aug 2025