Vitamin A Deficiency News and Research

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Scurvy is not just an 18th-century seafarers' disease, study shows

Scurvy, or vitamin C deficiency, is not just an 18th-century seafarers' disease, as a case study of a 65-year-old woman with mobility issues and social isolation shows.

7 Oct 2024

Current and emerging biomarkers in the management of inflammatory bowel disease

Inflammatory bowel disease (IBD), encompassing Crohn's disease (CD) and ulcerative colitis (UC), is a chronic inflammatory disorder of the gastrointestinal (GI) tract that significantly impacts the quality of life of patients.

12 Sep 2024

Study reveals a new target for universal treatment for autoimmune diseases

More than two decades ago, a research team in the lab of David Hafler, a Yale researcher who at the time was at Harvard, discovered a type of T cell in humans that suppresses the immune system; they later found that these so-called regulatory T cells, when defective, are an underlying cause of autoimmune disease, specifically multiple sclerosis (MS).

28 Aug 2024

SCARB2 deficiency disrupts bile acid metabolism and gut microbiome

The study details the connection between SCARB2 deficiency and gastrointestinal dysfunction, revealing that the loss of SCARB2 leads to alterations in bile acid metabolism and dysbiosis in the gut microbiome. This disruption affects the signaling pathway involving FXR, which normally regulates bile acid synthesis and intestinal lipid absorption. The hyperactive FXR in Scarb2-deficient mice leads to a decrease in epithelial cell turnover and lipid malabsorption, particularly impacting the absorption of vitamin E, which is crucial for maintaining neurological health. The researchers further explored the impact of these changes on the gut-liver axis and found alterations in the expression of genes related to bile acid synthesis.

23 Aug 2024

Vitamin D deficiency linked to higher cancer mortality

Researchers review how vitamin D deficiency affects the risk of cancer-related mortality.

20 Aug 2024

Scurvy on the rise in the United States: Pediatric cases triple in five years

Researchers found that pediatric scurvy cases tripled from 2016 to 2020, highlighting a significant rise in incidence, particularly among low-income, male, and autistic children.

19 Jul 2024

Archaea: Unseen players in human microbiome and infectious diseases

Archaea, key players in the human microbiome, are linked to various diseases but their pathogenic potential remains speculative. This study highlights their role in conditions like periodontitis and gastrointestinal infections.

16 Jul 2024

Targeted vitamin D supplementation may lower depression risk for deficient individuals, study finds

Targeted vitamin D supplementation for those with low levels can reduce the risk of depression, but shows no significant impact on chronic pain or other conditions.

7 Jul 2024

Decoding the significance of subnormal liver enzyme activity

Liver diseases are commonly diagnosed using serum enzyme assays, particularly for aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), gamma-glutamyl transpeptidase (GGT), and 5'-nucleotidase (5'-NT).

3 Jul 2024

Vitamin D for carpal tunnel syndrome symptoms

Study examines the impact of vitamin D supplementation on carpal tunnel syndrome (CTS) patients with low vitamin D levels, finding that it improves pain relief and symptom severity when added to corticosteroid therapy.

23 Jun 2024

Does diet influence the onset of multiple sclerosis?

A recent study using the UK Biobank data indicates that a healthy diet, including moderate fatty fish and alcohol consumption, can reduce the risk of multiple sclerosis (MS) onset.

5 Jun 2024

Most CDC-certified vitamin D tests are well calibrated, study says

Vitamin D tests certified by the U.S. Centers for Disease Control and Prevention (CDC) Clinical Standardization Programs (CSP) are well calibrated overall, according to a new study presented Sunday at ENDO 2024, the Endocrine Society's annual meeting in Boston, Mass.

3 Jun 2024

Low vitamin D levels linked to higher diabetes risk in older adults, study finds

A meta-analysis found that low serum vitamin D levels significantly increase the risk of developing type 2 diabetes in older adults, even after adjusting for several confounders.

27 May 2024

Personalized vitamin D guidelines based on latitude and skin type could tackle deficiencies

Study highlights the importance of personalized vitamin D exposure recommendations based on latitude, skin type, and seasonal variations, providing valuable insights for addressing widespread deficiencies.

17 May 2024

Study reveals how UV exposure and ethnicity impact vitamin D levels, calling for tailored supplementation guidelines

A study in "Clinical Nutrition" reveals the complex interactions of UVB exposure, supplements, and ethnicity on vitamin D levels, underscoring the need for personalized supplementation guidelines based on demographic factors.

8 May 2024

Study sheds light on the complexities of achieving optimal vitamin D status across diverse populations

A new study from Trinity College Dublin scientists sheds light on the complexities of achieving optimal vitamin D status across diverse populations.

2 May 2024

Study links endocrine-disrupting chemical exposure to poorer sleep and vitamin D deficiency

Study in the journal Nutrients links exposure to endocrine-disrupting chemicals with vitamin D deficiency and reduced sleep duration, suggesting a compounded negative impact on health.

30 Apr 2024

Study investigates the potential effects of neonatal vitamin D on eczema up to adulthood

Australian researchers find that higher neonatal vitamin D levels are associated with lower odds of early-onset persistent eczema but an increased risk of early-onset resolving eczema in children up to age 25.

30 Apr 2024

Low vitamin D tied to belly fat and weak muscles in women

Low vitamin D in women is linked to more belly fat and lower muscle mass. The study suggests using waist-to-height ratio and muscle mass index to assess health risks.

25 Apr 2024

Vitamin D deficiency persists despite easy access, review suggests need for tailored supplements

Researchers in a study published in the journal Nutrients delve into the pervasive issue of vitamin D deficiency and its link to various health conditions, advocating for precision nutrition and personalized supplementation to enhance vitamin D intake and effectiveness.

17 Apr 2024