Category Archives: Vitamin A

Vitamin A: Teratogenic Effects

Posted on May 15, 2023 by Robert Barrington

Vitamin A refers to a group of chemicals that are all able to provide the same function in humans. Retinal, retinol, retinaldehyde, retinoic acid and β-carotene (and certain other carotenoids) can all provide the activity of vitamin A. Vitamin A … Continue reading →

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Cod Liver Oil Versus Fish Oils

Posted on April 18, 2023 by Robert Barrington

Cod liver oil and fish oils are two different supplements that have overlapping but distinct effects. Cod liver oil refers to the oil extracted from the liver of the cold water cod fish. This oil is high in vitamin A … Continue reading →

Posted in Docosahexaenoic Acid, Eicosapentaenoic Acid, Fish Oils, Vitamin A, Vitamin D | Comments Off on Cod Liver Oil Versus Fish Oils

Antioxidants: Depression and Anxiety

Posted on February 5, 2019 by Robert Barrington

Oxidative stress is associated with detrimental mood changes. The aetiology of depression and anxiety are complex, but it is thought that the release of inflammatory cytokines may be an initiating step. The release of these cytokines can be caused by … Continue reading →

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Vitamin D Toxicity: Part 3

Posted on August 23, 2018 by Robert Barrington

Three main theories have been suggested to explain the toxicity associated with excessive intakes of vitamin D. These theories are described and discussed in part 1 (here) and part 2 (here) of this article. The traditional view is that high … Continue reading →

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Vitamin D Toxicity: Part 2

Posted on August 22, 2018 by Robert Barrington

In my previous article on vitamin D toxicity (here), I explained that vitamin D can become toxic at high doses. The traditional explanation of vitamin D toxicity relates to the ability of high intakes of one vitamin D metabolite, 1,25-dihydroxyvitamin … Continue reading →

Posted in 1,25-dihydroxyvitamin D / Calcitriol, 25-hydroxyvitamin D, Calcium, Vitamin A, Vitamin D, Vitamin K | Comments Off on Vitamin D Toxicity: Part 2

Antioxidants Protect From Cardiovascular Disease: More Evidence

Posted on May 6, 2016 by Robert Barrington

For decades, time and money has been wasted on propagation of the cholesterol theory of cardiovascular disease. However, despite intensive propaganda campaigns the cholesterol theory of cardiovascular disease lies in tatters. And the scientific evidence is clear on the matter, … Continue reading →

Posted in Atherosclerosis, Beta Carotene, Cardiovascular Disease, Endothelial Dysfunction, Nitric Oxide, Vitamin A, Vitamin C, Vitamin E | Comments Off on Antioxidants Protect From Cardiovascular Disease: More Evidence

Roughly 50 Essential Factors

Posted on January 30, 2016 by Robert Barrington
Posted in Biotin, Calcium, Chromium, Cobalamin, Cobalt, Essential Amino Acids, Essential Fatty Acids, Fluoride, Glucose, Iron, L-leucine, L-lysine, L-methionine, L-phenylalanine, L-theanine, L-tryptophan, Leucine, Macrominerals, Magnesium, Manganese, Molybdenum, Niacin, Nickel, Pantothenic Acid, Phosphorus, Riboflavin, Selenium, Sodium, Starch, Thiamine, Trace Minerals, Vanadium, Vitamin A, Vitamin B, Vitamin C, Vitamin D, Vitamin E, Vitamin K, Zinc | Comments Off on Roughly 50 Essential Factors

Vitamin A: Cheap Childhood Infection Fighter

Posted on August 21, 2015 by Robert Barrington

In the nations of the West the average age has risen largely due to a significant decrease in the risk of death in childhood. As more people survive childhood and live to their maximum age, it pushes the average age … Continue reading →

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Alfalfa: Nutrient Dense Herb

Posted on April 12, 2015 by Robert Barrington

Alfalfa (Medicago sativa) is perennial herb that belongs to the Fabaceae or legume family of plants. Alfalfa grows to around one metre in height and possesses leaves that look similar to trilobed clover leaves. Alfalfa produced purple flowers which mature … Continue reading →

Posted in Alfalfa, Antioxidant, Courmarins, Daidzein, Flavonoids, Genistein, Isoflavones, Pulses / Legumes, Saponins, Vitamin A, Vitamin B, Vitamin C, Vitamin K | Comments Off on Alfalfa: Nutrient Dense Herb

Are Multivitamin and Mineral Supplements Effective?

Posted on April 2, 2015 by Robert Barrington

Evidence in the scientific literature suggests that certain minerals and vitamin intakes are deficient in large proportions of Western populations. Essential nutrients that are of particular concern include vitamin D, chromium, calcium and magnesium. The main reason for low intake … Continue reading →

Posted in Calcium, Exercise, Macrominerals, Magnesium, Micronutrients, Multivitamin Multimineral, Trace Minerals, Vitamin A, Vitamin B, Vitamin C, Vitamin D, Vitamin E, Zinc | Comments Off on Are Multivitamin and Mineral Supplements Effective?