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This article has been double-blind peer reviewed In this article The role vitamin A plays in vision, and the effects of deficiencies on ocular health and function How vitamin A maintains epithelial integrity and immune function The effect of vitamin C on collagen production and what causes scurvy Key points Vitamin A is fat soluble and can be obtained directly or indirectly from food A deficiency of vitamin A can cause night blindness Humans cannot synthesise vitamin C so must obtain it directly from their diet Vitamins A and C are essential for maintaining healthy skin and a healthy immune system Chronic vitamin C deficiency may result in scurvy

As an off-target effect, the metabolomics revealed that histidine supplementation reduced and augmented tumoral concentrations of adenosine monophosphate and tryptophan respectively, metabolites associated with immunosuppressive or immunostimulating potential respectively (Supplementary Fig

doi:10.37765/ajmc.2025.89778 Sagarino T, Luciano S, Sagarino T

In animal models, retatrutide reduced food intake , body weight , and glycemic markers more than GLP-1 monotherapy and dual GLP-1/GIP agonists

Organic acids as antimicrobial food agents: applications and microbial productions

It belongs to the group of ghrelin mimetics, designed to stimulate the release of growth hormone (GH) without significantly affecting other hormones such as cortisol or prolactin