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GlossaryVitamin A Deficiency (hypovitaminosis A)

lack of vitamin A leading to vision and immune issues

Vitamin A Deficiency, also known as hypovitaminosis A, occurs when the body doesn't get enough vitamin A, an essential nutrient for maintaining healthy vision, immune function, and skin health. This deficiency can lead to symptoms such as night blindness, an increased risk of infections, and in severe cases, can cause complete blindness and other serious health issues.

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research Determining the Causes of Reproductive Disorders in Nutrias

May 2025 in “VETERINARY SCIENCE TECHNOLOGIES OF ANIMAL HUSBANDRY AND NATURE MANAGEMENT”

Poor-quality feed and low vitamin A cause reproductive issues in nutrias.

research Effect of Vitamin A Deficiency on Hair Growth in Rats

October 1974 in “PubMed”

research Dermatopathy in Juvenile Angus Cattle Due to Vitamin A Deficiency

7 citations , May 2012 in “Journal of veterinary diagnostic investigation”

Some young Angus cattle had skin problems due to not enough vitamin A, which got better after they were given more vitamin A.

research Retinoids Putting the 'A' in Alopecia

7 citations , January 2013 in “Journal of Investigative Dermatology”

Vitamin A may influence hair loss conditions like alopecia, but more research is needed to understand how.

research Renal Vitamins

4 citations , March 2006 in “Journal of renal nutrition”

Dialysis patients benefit from water-soluble vitamins but need careful management to avoid risks.

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community Vitamin D deficiency strongly correlates with androgenic alopecia, FMPH and telogen effluvium

in Research/Science 163 upvotes 1 year ago

Vitamin D deficiency is linked to hair loss, and supplementation with vitamin D can improve conditions like androgenic alopecia and telogen effluvium. Users discussed various dosages of vitamin D, emphasizing the importance of getting blood tests to determine the appropriate amount.

community Going to try and reverse MPB naturally.

in Treatment 55 upvotes 3 years ago

A user is trying to reverse male pattern baldness (MPB) naturally by taking high doses of Vitamin D, improving diet, exercising, reducing stress, and other lifestyle changes, but plans to use finasteride if no results are seen in 60 days. Other users are skeptical, advising medical treatments like finasteride and warning against potential vitamin D overdose and the ineffectiveness of natural remedies for genetic hair loss.