1. Milk: Whether full-fat or skimmed, milk contains natural vitamin D, and many milks on the market have been fortified with vitamin D.

2. Salmon: Among all natural foods, salmon has the highest vitamin D content. In addition to salmon, tuna is also rich in vitamin D. Whether fresh, frozen, or canned, the content is high.

3. Shrimp: Shrimp is rich in omega-3 fatty acids and protein, but is low in fat and calories.

4. Eggs: Eggs are a powerful nutrient bank. Egg yolk contains a lot of vitamin D, and the egg white also contains a lot of high-quality protein.