Vitamin D Deficiency News and Research

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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

Thousands of ‘healthy’ Brits are unknowingly low on iron

A study reveals 6% of health-conscious UK adults have anemia, primarily due to iron deficiency, often without noticeable symptoms, especially in women.

9 Oct 2025

Japan's registry transforms outcomes for infants with biliary atresia

Biliary atresia (BA) is the leading cause of liver failure in infants, marked by progressive destruction of the bile ducts. Until the late 1950s, the disease was universally fatal, with no effective treatments. The development of the Kasai portoenterostomy brought new hope, but outcomes varied widely, and many patients still required liver transplantation (LTx).

8 Oct 2025

Hyperemesis gravidarum associated with increased neuropsychiatric disorders in pregnancy

The largest study on pregnant women with excessive nausea and vomiting (hyperemesis gravidarum) has identified increased risks of numerous neuropsychiatric and mental health outcomes.

18 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

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

Majority of reproductive-aged women face modifiable risks linked to birth defects

An analysis using data from the National Health and Nutrition Examination Survey (NHANES) among 5,374 women of reproductive age indicates that two thirds of women within this demographic have at least one modifiable risk factor, such as low folate status or unmanaged diabetes, that can increase the chance of serious birth defects.

26 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

Why zinc may be the missing nutrient in childhood asthma care

The role of zinc in childhood asthma is critical; deficiency may worsen symptoms, while supplementation could provide a safe, effective treatment alternative.

19 Aug 2025

High-dose vitamin D strengthens bones in very low birth weight infants

Research indicates that high-dose vitamin D improves bone health in very low birth weight preterm infants, highlighting its role in early development.

8 Aug 2025

New research unveils vast influence of B vitamins on health and disease

Eight essential nutrients make up the suite of B vitamins also known as the B complex. Researchers from Tufts University and elsewhere have revealed that these B vitamins influence a vast spectrum of human health and disease, including cognitive function, cardiovascular health, gastric bypass recovery, neural tube defects, and even cancer.

4 Aug 2025

Patients face vitamin deficiencies years after bariatric surgery

A review reveals dangerous vitamin deficiencies post-bariatric surgery, highlighting the need for improved follow-up to prevent life-threatening complications.

30 Jul 2025

Most UK high street self-tests fall short on accuracy and safety warnings

Many self-tests available on the UK high street are unfit-for-purpose and need much greater regulation to ensure they are safe and reliable, conclude two studies published by The BMJ today.

24 Jul 2025

Blocking a single gene disrupts vitamin D metabolism and cancer pathways in new cell study

Researchers identified SDR42E1 as a key regulator of vitamin D absorption and sterol metabolism in colorectal cancer cells. Disruption of this enzyme altered cancer-related pathways and cell viability, highlighting its potential as a therapeutic target.

21 Jul 2025

Study identifies SDR42E1's role in vitamin D pathway

Vitamin D is not only an essential nutrient, but also the precursor of the hormone calcitriol, indispensable for health: it regulates the uptake of phosphate and calcium necessary for bones by the intestines, as well as cell growth and the proper function of muscles, nerve cells, and the immune system.

18 Jul 2025