1. Vitamin A: This vitamin is essential for healthy vision, a robust immune system, and proper cell growth and development. It can be found in orange and yellow fruits and vegetables, dairy products, and liver.
2. Vitamin C: Vitamin C is an antioxidant that helps protect cells from damage and promotes healthy skin, bones, and teeth. It can be found in citrus fruits, tomatoes, and strawberries.
3. Vitamin D: Vitamin D is crucial for healthy bones and teeth, and it helps regulate calcium absorption in the body. While our bodies can produce vitamin D from sunlight, it can also be found in fatty fish, egg yolks, and fortified dairy products.
4. Vitamin E: Vitamin E is an antioxidant that helps protect cells from damage and promotes healthy skin and hair. It can be found in nuts, seeds, and vegetable oils.

Supplements can also be used to provide additional nutrients that may be lacking in our diets. However, it's essential to remember that supplements should never be used as a replacement for a healthy diet. Instead, they should be used to complement a healthy lifestyle.

Here are some of the popular supplements that people use to support their health:

1. Omega-3 Fatty Acids: Omega-3 fatty acids are essential for healthy brain function and can be found in fatty fish such as salmon and mackerel. If you don't eat fish regularly, supplements can provide an easy way to get your daily dose.
2. Probiotics: Probiotics are live bacteria that promote healthy gut bacteria and improve digestive health. They can be found in fermented foods such as yogurt and sauerkraut, or as supplements.
3. Multivitamins: Multivitamins are a convenient way to ensure that you're getting all the essential vitamins and minerals you need. They can be particularly helpful for individuals who have a restricted diet, such as vegans and vegetarians.
4. Calcium: Calcium is essential for healthy bones and teeth, and it can be found in dairy products, leafy greens, and fortified foods. Supplements can be useful for individuals who are lactose intolerant or don't consume dairy.

In conclusion, healthy vitamins and supplements can be beneficial for individuals who may be lacking essential nutrients in their diets. However, it's essential to remember that supplements should never be used as a replacement for a healthy diet. If you're considering taking supplements, it's always a good idea to talk to your doctor or a registered dietitian to determine which ones are right for you.