1. Fatty fish
Salmon, mackerel, and sardines are great sources of vitamin D. They provide healthy fats and vitamin D, which support the immune system.
2. Chicken egg yolk
Eggs, especially yolks, are an excellent source of vitamin D. Eating eggs will provide many important vitamins, helping the body fight infections.

3. Mushrooms
Coriander and maitake mushrooms contain vitamin D. Mushrooms absorb vitamin D when exposed to the sun, which is a good plant source for the immune system.
4. Milk
cow's milk and plant milk (soya, almonds) are often supplemented with vitamin D. This is an easy way to supplement vitamin D, especially for those who do not eat a lot of fish or eggs.
5. Fresh cheese
Whole cheese is not only rich in protein but also contains vitamin D. Adding cheese to your diet is an easy way to support immune health.