Fatty fish such as salmon are among the best natural sources of Vitamin D. Regular consumption can help support bone health, muscle function and immunity. 

Many varieties of milk is fortified with Vitamin D, making them a convenient option for boosting intake. Fortified milk also provides calcium and protein, which work together with Vitamin D.

Certain mushrooms, especially those exposed to ultraviolet light, can naturally produce Vitamin D. They are one of the few plant-based sources of the nutrient. 

Egg yolks contain Vitamin D along with essential nutrients including protein, healthy fats and vitamins. Adding eggs to a balanced diet can contribute to daily Vitamin D intake. 

Several breakfast cereals are fortified with Vitamin D and other essential nutrients. When paired with milk or yoghurt, they can help increase daily Vitamin D consumption.