Your skin can produce large quantities of vitamin D on its own when exposed to the sun’s UV-B rays.
Consume fatty fish and seafood
Fatty fish and seafood are among the foods highest in vitamin D, though exact vitamin content may vary depending on the type and source of the food in question.
Eat more mushrooms
Mushrooms produce vitamin D through UV light exposure, with wild or commercially grown ones having higher levels.
Include egg yolks in your diet
Free-range and pastured eggs are a great source of vitamin D, as chickens with access to sunlight produce more vitamin D in their eggs than those that remain indoors.