Vitamin A Archives

Tag: Vitamin A

Chemical names: Retinol, retinal, and four carotenoids, including beta carotene.

It is fat soluble.
Deficiency may cause night-blindness and keratomalacia, an eye disorder that results in a dry cornea.
Good sources include: Liver, cod liver oil, carrots, broccoli, sweet potato, butter, kale, spinach, pumpkin, collard greens, some cheeses, egg, apricot, cantaloupe melon, and milk.

22 May 2026

By Ronny Allan

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Fat‑Soluble Vitamins in Neuroendocrine Tumours (NETs): Why Deficiency Happens and Who Is Most at Risk

A spotlight on NENs, Diet and Nutrition, Patient AdvocacyBile acid malabsorption, Fat malabsorption, Fat soluble vitamins, Malabsorption, Vitamin A, Vitamin ADEK, Vitamin D, Vitamin E, Vitamin K

This blog provides general educational information only. It does not offer medical advice, diagnosis, or treatment. Patients should always consult their clinical team for personalised guidance. Introduction: What Are Fat‑Soluble Vitamins? Fat‑soluble vitamins — A, D, E and K — are nutrients that can only be absorbed when dietary fat is digested properly. They rely on bile acids, pancreatic enzymes, and a healthy small intestine (especially the jejunum and ileum) to form tiny droplets called micelles, which carry these vitamins across the gut wall. Unlike water‑soluble vitamins, they are stored in the liver and fatty tissues, so deficiencies develop…

15 May 2026

By Ronny Allan

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Neuroendocrine Tumours – A Spotlight on Vitamin A (Retinol)

Diet and Nutrition, Patient Advocacycarotenoids, Malabsorption, Vitamin A, Vitamin ADEK

Disclaimer: This Spotlight provides general educational information about Vitamin A. It is not a substitute for medical advice. Individual needs vary, particularly for those with conditions affecting digestion, absorption, or liver function. Always consult your medical team before making changes to supplements or nutrition. 🟧A general‑population overview with NET‑specific considerations where relevant. What is Vitamin A? Vitamin A refers to a group of fat‑soluble retinoids (retinol, retinal, retinoic acid). These are the active forms used by the body. Plant pigments such as beta‑carotene are pro‑vitamin A carotenoids that must be converted into retinol before use. What does Vitamin A do?…

26 Jun 2025

By Ronny Allan

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An ENETS Position Statement on nutritional support in Neuroendocrine Neoplasms

Diet and NutritionBile acid malabsorption, Diet, Digestive enzymes, Fat malabsorption, Fat soluble vitamins, Nutrition, Pancreatic enzyme replacement therapy (PERT), Vitamin A, Vitamin ADEK, Vitamin B12, Vitamin D

I've written many times about Nutrition and NETs - clearly it should say NENs (Neuroendocrine Neoplasms) as the issues also extend to Neuroendocrine Carcinomas. I was helped in the early days by my friend and 'nutrition for NET' mentor Tara Whyand, at the time, probably the top NET Nutrition Registered Dietitian in the world. Perhaps she still is. Much of what Tara said and wrote, and what I emphasised, particularly in my blog and my patient group, was that much of this was not fully integrated into NEN patient care as part of a multi disciplinary approach. Many attempts have…

23 May 2024

By Ronny Allan

29 Comments

Neuroendocrine Cancer Nutrition Series Article 1 – Vitamin and Mineral Challenges

Diet and NutritionAnorexia, Carcinoid syndrome, Fat soluble vitamins, Fatigue, Malabsorption, Mineral, Neuroendocrine, Neuroendocrine cancer, Neuroendocrine carcinoma (NEC), Nutrition, Vitamin A, Vitamin ADEK, Vitamin B complex, Vitamin B1, Vitamin B12, Vitamin B2, Vitamin B3, Vitamin B5, Vitamin B6, Vitamin B7, Vitamin B9, Vitamin C, Vitamin D, Vitamin E, Vitamin K, Water soluble vitamins

Disclaimer: This Spotlight is for general information only and should not be used as a substitute for personalised medical advice. Neuroendocrine neoplasms (NENs) are diverse, and individual cases vary. Always discuss your specific situation, test results, and treatment options with your own specialist team. Content reflects current evidence and classifications at the time of writing and may evolve as new data emerge. Always speak to your specialist before taking vitamin and mineral supplements. Featuring Tara Whyand Vitamin deficiency is common in the general population so your issue may not be related to NET. But read on to learn…