In many regions, countries with higher consumption of fish and other seafood tend to have higher levels of DHA, choline, and vitamin B12 in their populations' diets, because these nutrients come more...
Mechanism
Synthesis from 1 study
Fish and seafood pack more of three key nutrients—DHA, choline, and vitamin B12—into each bite than other meats or dairy, and your body absorbs them better. This is why, in places where people eat more seafood, these nutrients are more available in the diet, even if other foods are eaten in similar...
Most probable mechanism
When people eat fish and other sea animals, their bodies get more of three important nutrients—DHA, choline, and vitamin B12—because these foods naturally contain much higher amounts of these nutrients in forms that are easy for the body to absorb and use, compared to other types of meat or dairy.
Docosahexaenoic acid (DHA) is absorbed in the small intestine from aquatic animal sources and incorporated into cell membranes, particularly in the brain and retina, where it supports structural integrity and signaling functions.
Choline from aquatic animal sources is absorbed in the small intestine and used by the liver to produce phosphatidylcholine and betaine, which support cell membrane formation, neurotransmitter synthesis, and methylation reactions essential for brain development.
Vitamin B12 from aquatic animal sources binds to intrinsic factor in the stomach and is absorbed in the ileum, where it acts as a cofactor in enzymes that produce DNA, red blood cells, and myelin sheaths around nerves.
Heme iron and zinc from mollusks and crustaceans are absorbed more efficiently than non-heme forms from plant or non-aquatic animal sources, enhancing overall nutrient bioavailability and supporting erythropoiesis and enzymatic functions.
The combined presence of DHA, choline, vitamin B12, heme iron, and zinc in aquatic animal foods creates a nutrient profile that is denser and more bioavailable than that of terrestrial animal sources, leading to disproportionate contribution to population-level nutrient availability.
Evidence from Studies
Supporting (1)
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Aquatic Animal Foods for Nutrition Security and Child Health
Contradicting (0)
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