Dietary Vitamin B12 Shapes Inherited Traits in Worms

Researchers show that vitamin B12 in the diet of the nematode Pristionchus pacificus can induce a predatory mouth form that is passed to offspring through egg nutrients, demonstrating diet-driven epigenetic inheritance. The effect depends on dose and is linked to methionine, with folate not producing the same result; while this reveals a mechanism in worms, there is no evidence it applies to humans.