As listed by the USDA, one whole egg yolk packs a whopping 218 IU in vitamin D. Simply making a frittata or some scrambled eggs in the morning with two eggs could give you a 436-IU boost of vitamin D.

But Vitamin D is not the only ingredient used in food fortification. Pearse sees “significant” opportunity for a wide-range of ingredients to be used in beverages to make vitamin-enriched drinks, ...

Your doctor may recommend vitamin D supplementation and could prescribe a vitamin D supplement, or they might suggest an over-the-counter product. This may not be best for everyone, though.