Vitamin A (Retinoids; β-Carotene precursor)
Overview
Vitamin A is a fat-soluble vitamin that exists in two main forms: preformed vitamin A (retinoids) from animal sources and provitamin A carotenoids (like β-carotene) from plant sources. The body can oxidise those precursors to retinoic acid; the foods do not store that acid. Vitamin A is essential for vision, immune function, and neurodevelopment. Provitamin A carotenoids also function as antioxidants in neural tissue, contributing to the antioxidant network that protects brain cells from oxidative damage. The absorption of carotenoids is significantly enhanced when consumed with dietary fats, making food pairing important for maximizing bioavailability.
Recipes
9 recipes containing this substance
Creamed Corn on Roasted Sweet Potato
Roasted sweet potato with creamed corn and a mixed lipid phase to enhance carotenoid absorption; served with broccoli for fibre and glucosinolates.
Linguine alle vongole mantecate (Linguine with cockles in a silky emulsified sauce)
Whole-wheat linguine with cockles in a silky emulsified sauce; Italian emulsification technique without cream, supporting taurine, B12, and choline intake.
Matcha Mitochondria Smoothie
Mitochondrial energising smoothie rich in polyphenols, magnesium, and antioxidants
Mitochondrial Power Bowl
A nitrate-rich, polyphenol-dense bowl combining leafy greens, beets, berries, nuts, and early harvest olive oil
Mixed-Leaf Tahini Caesar Salad
A Caesar-style mixed-leaf salad with a tahini, anchovy, caper and Parmesan dressing, using extra virgin olive oil retained from oil-packed capers.
Neuroeshot (Roe, Lemon, Hot Sauce)
A small savory shot of roe, lemon juice, and fermented hot sauce for concentrated omega-3s and choline.
Salmon Bowl-pistachio-cacao-nibs
A Mediterranean-style bowl combining salmon, avocado, pistachios, cacao nibs, and early harvest olive oil — rich in omega-3 fats, polyphenols, and fibre.
Savoury Greens & Egg Breakfast Skillet
A warm savoury breakfast skillet with eggs, greens, and slow carbohydrates for steady morning energy.
Turmeric Lentil Dahl
Turmeric- and ginger-spiced lentil dish rich in fibre, folate, and polyphenols
Foods
10 foods
Butter
Dairy fat providing vitamin A and culinary saturated fat
Egg Yolks
Nutrient-dense part of eggs with choline, lutein, and fat-soluble vitamins
Ghee
Heat-stable clarified butter with butyrate and fat-soluble vitamins
Grass-Fed Butter
Butyrate, CLA, vitamins A/D/K2, selenium, and C15:0
Kale
Leafy green providing vitamin C, vitamin K, calcium and carotenoids
Liver
Nutrient-dense organ meat with bioavailable B12, retinol, iron, and CoQ10
Romaine Lettuce
Crisp salad lettuce providing vitamin K, folate and carotenoids
Salmon Roe
Premium salmon (ikura) eggs — phospholipid-bound EPA/DHA and choline
Spinach
Leafy green rich in iron, magnesium, folate, and carotenoids
Swiss Chard
Leafy green rich in iron, magnesium, folate, and carotenoids
Biological Mechanisms and Implications
References
- Carotenoids, particularly lutein, zeaxanthin, and β-carotene, play a neuroprotective role through their antioxidant and anti-inflammatory properties Johnson 2014
- The bioaccessibility of carotenoids in vegetables is remarkably low—only 1-3% of the β-carotene in raw carrots is accessible for absorption Fielding et al. 2005
- Co-consuming a small amount of unsaturated fat with polyphenol-rich foods improves micelle formation and chylomicron packaging, increasing carotenoid and fat-soluble vitamin absorption Kindel et al. 2010 Brown et al. 2004