1. Soy-based Products
Soy-based products are often enriched with both vitamin D and calcium. Fortified tofu can provide up to 157 IU of vitamin D per 100g. Soy milk contains 49 IU of vitamin D per 100g and 119 IU per cup. The abundant protein in soy helps metabolize fats in the liver and adipose tissue, reducing the formation of fatty acids and new cholesterol, and aids in preventing diabetes.
Omega-3 and Omega-6 fatty acids, along with antioxidants in soy, protect blood vessels from damage and rupture. These compounds shield the blood vessels from free radicals and cholesterol plaques. Additionally, they improve blood vessel flexibility and condition, making them more resilient to changes in blood pressure.


2. Cereals
Cereals are primarily consumed in many households as part of breakfast. Most commercial cereals are fortified with essential vitamins and nutrients. Cereals can provide up to 342 IU per 100g. On average, consuming 2 bowls of cereal, or even more, can significantly boost your nutritional intake. It's important to carefully check product labels before purchasing and choose cereals with little or no refined sugars.
Cereals are not just a carbohydrate-rich food, they also contain a high amount of B vitamins, which help boost energy production in the body. The folic acid found in cereals is a safe nutrient for both pregnant women and young children. If you're anemic and need to supplement iron, cereals are a safe and beneficial option. People with high blood pressure, diabetes, and cardiovascular conditions can confidently consume cereals as well.


3. Mushrooms
Mushrooms are among the richest sources of vitamin D. During their growth, mushrooms are exposed to a significant amount of ultraviolet rays from the sun. As a result, the vitamin D content in mushrooms is high and varies depending on the type and variety. White mushrooms, also known as button mushrooms, are particularly abundant in vitamin D. Shiitake mushrooms contain a limited amount of vitamin D, about 3% of the daily required intake, and 140 calories. One cup of chopped mushrooms can provide up to 64% of the daily vitamin D requirement while contributing very few calories. In addition, mushrooms offer various other health benefits.
Over the past 15 years, mushroom farming has become a highly profitable industry in Vietnam. Mushrooms are cultivated across various provinces and cities. Common types of mushrooms grown in Vietnam include Oyster mushrooms, Fat mushrooms, Straw mushrooms, Wood ear mushrooms, Ganoderma mushrooms, and Shiitake mushrooms. In the northern provinces like Hai Duong, Hanoi, and Ninh Binh, many businesses, cooperatives, and families engage in mushroom farming, producing over 10,000 tons annually. In the southern provinces, primarily straw mushrooms and wood ear mushrooms are cultivated, with a production volume exceeding 100,000 tons per year.


4. Eggs
Eggs are packed with essential nutrients that promote healthy hair, nails, and overall well-being. A large egg can provide up to 7% of the daily vitamin D requirement. The yolk alone contributes 6% of this nutrient. Additionally, egg yolks offer other vital nutrients like vitamins A and E.
Eggs also contain lecithin, a fat that helps regulate cholesterol levels and prevents excess cholesterol buildup. Studies have shown that the cholesterol found in eggs does not increase blood cholesterol levels. Furthermore, eggs are rich in protein, sulfur, and essential amino acids that are crucial for the body.


5. Avocados
Avocados contain a small amount of vitamin D. One avocado bar provides 9 IU of vitamin D along with 102 calories and is commonly known for its high content of saturated fats. However, it’s important to remember that saturated fats are also essential as they help the body absorb antioxidants and vitamin D. Enjoy avocados in moderation as part of your meals.
Avocados are also relatively rich in fiber. This fiber helps reduce blood sugar levels, aids in weight loss, and is closely linked to many major health benefits. There are two types of fiber: soluble and insoluble. Only 25% of the fiber in avocados is soluble, while the remaining 75% is insoluble.


6. Cheese
Cheese is a food that contains both abundant amounts of vitamin C and D. These vitamins are essential for keeping you healthy and youthful. A slice of cheese can provide you with 6 IU of vitamin D. For example, 28.35g of cheese delivers 6 IU of vitamin D.
You can add a slice of cheese to your sandwich or burger. Sprinkle some shredded cheese over pasta or pizza to make your dishes more nutritious. You can also substitute pasta with cheese to replace wheat in your meals. Don’t forget to add fresh vegetables and herbs to boost the nutritional value of your meals.


7. Beef Liver
Beef liver is rich in vitamins, minerals, and other nutrients. It contains fewer calories and less fat compared to other red meats. Beef liver can also help you meet your daily vitamin D needs. Just 100g of beef liver provides 50 IU of vitamin D, along with other nutrients like iron and protein.
Liver not only provides a high dose of iron and vitamin A but is also one of the best sources of many B vitamins, phosphorus, and magnesium. In fact, liver is the largest source of vitamin B12. However, to fully enjoy these benefits, it’s essential to consume the right kind of liver—ideally, from organically raised, grass-fed animals. We should avoid eating organs from animals that are not free-range and opt for clean, healthy food sources.


8. Fish
Among fish types, particularly catfish, there's a significant amount of vitamin D, especially when the fish is cooked. Fish oil also aids in the absorption of vitamins. Additionally, canned catfish in fish oil is rich in vitamin D. Atlantic herring has the highest vitamin D content, providing 16.28 IU per 100g. Other fish like pickled herring, salmon, mackerel, sardine oil packaging, and tuna oil packaging are also packed with vitamin D.
Fish is an easily digestible and absorbable food. It’s rich in protein with a balanced ratio of essential amino acids. For every 100g of fish, you get 16–20g of protein and 4–30g of fat. Fish meat has low fat but a high amount of fatty acids, which are easily absorbed and beneficial for preventing cardiovascular diseases. Fish oil, especially from mackerel liver, is loaded with vitamin D, A, and B vitamins. Moreover, fish has high levels of minerals like phosphorus and a bit of calcium (with a better calcium/phosphorus ratio than meat). Fish also contains significant amounts of iron, copper, cobalt, zinc, and iodine. However, fish is hard to store and is a great breeding ground for bacteria. Proper storage is essential to avoid contamination and food poisoning from spoiled fish.


9. Clams
Clams are a rich source of vitamin D, along with other nutrients like B12, zinc, iron, manganese, selenium, and copper. This seafood can provide 320 IU of vitamin D per 100g. However, clams are also high in cholesterol, so those at risk for heart disease or stroke should either avoid them or consume them in moderation.
Among different types of clams, blood clams stand out as a highly nutritious option. Packed with protein, magnesium, zinc, and omega-3 fatty acids, blood clams are considered a delicacy and a traditional remedy in Vietnamese folk medicine.


10. Vietnamese Sausage, Ham, and Salami
These foods are rich in vitamin B12 and copper. Sausage contains 62 IU of vitamin D per 100g, while Vietnamese pork sausage offers 56 IU and ham provides 44 IU per 100g. However, these foods are also high in cholesterol and sodium, so they should be consumed in moderation by individuals at risk for high blood pressure, heart attacks, or strokes.
Vietnamese sausage, ham, and salami are popular dishes made from finely ground lean pork mixed with high-quality fish sauce. These dishes are commonly enjoyed in Vietnamese cuisine, representing both everyday meals and special treats in Vietnamese households.


