Tomatoes and onions are both important fruits and vegetables that help keep your body healthy. Both can be eaten raw, so you don’t always have to cook them to get the health benefits. However, this article talks about how eating raw tomatoes and onions is good for your health in some interesting ways.

People who eat more fruits and vegetables, like tomatoes and onions, are less likely to get chronic diseases than those who don’t get enough of these foods. This is because vegetables give the body the nutrients it needs to stay healthy.
Tomatoes and onions that are still raw are very good for our health. Both are full of healthy nutrients, like minerals and vitamins that science has shown to improve health and keep diseases away. Raw tomatoes and onions are good for your health because they can help treat heart disease, cancer, and headaches, among other things.
Table of contents
Nutrition
Nutritional Value of Raw TomatoesÂ
Tomatoes have a high concentration of many nutrients.
One cup of raw tomatoes, either chopped or sliced, has the following components:
- 32 calories (kcal)
- 170.14 g of water
- 1.58 g of protein
- 2.2 g of fiber
- 5.8 g of carbohydrate
- 0 g cholesterol
Tomatoes have a high vitamin and mineral content, including the following vitamins and minerals:
- 18 mg of calcium
- 427 mg of potassium
- 43 mg of phosphorus
- 24.7 mg of vitamin C
- 1499 international units (IU) of vitamin A
Tomatoes also have a lot of good vitamins, minerals, and antioxidants, such as:
- alpha-lipoic acid
- lycopene
- choline
- folic acid
- beta-carotene
- lutein
Nutritional Value of Raw Onions
One cup of finely chopped onion gives you:
- 64 calories
- 14.9 grams (g) of carbohydrate
- 0.16 g of fat
- 0 g of cholesterol
- 2.72 g of fiber
- 6.78 g of sugar
- 1.76 g of protein
According to the Dietary Guidelines for Americans‘ recommended daily allowance (RDA) and adequate intake (AI) values, onions are a good source of the following nutrients:
Nutrient | Percentage of daily requirement in adults |
Vitamin C (RDA) | 13.11% for males and 15.73% for females |
Vitamin B-6 (RDA) | 11.29–14.77%, depending on age |
Manganese (AI) | 8.96% for males and 11.44% for females |
Onions also have low levels of the following:
7 Health Benefits of Eating Raw Tomatoes and Onions

The combination of raw tomatoes and onions is a fruit and vegetable that is rich in nutrients. They can be consumed at the same time. Consuming raw tomatoes and onions imparts numerous important health benefits, some of which are listed below.
1. Prevent harm to your liver
If you eat enough tomatoes and onions, you can lessen the damage that harmful toxins, like cigarettes, do to your liver. They have both coumaric acid and chlorogenic acid. Together, these acids protect the liver from the carcinogens that come from smoking cigars.
2. Improves the health of your gut
Onions and tomatoes have a lot of fiber and prebiotics, which are important for the digestive system to work well. Eating raw tomatoes and onions can improve the health of your gut, help you get rid of constipation, and help you have healthy bowel movements.
3. Helps your eyesight
Vitamin A, which is found in tomatoes and onions, is very important for your eyesight. Also, both of these vegetables help keep you from going blind at night. Eat a lot of onions and tomatoes at all times.
4. Controls the level of blood sugar
Eating raw onions and tomatoes may help control blood sugar, which is especially important for people with diabetes or prediabetes. Fresh tomatoes and onions have an important mineral called chromium in them that helps people with diabetes keep their blood sugar levels normal. They both also have a glycemic index (G.I) that is very low
6. Helps keep the heart healthy
Heart disease is the leading cause of death around the world. This includes strokes and heart attacks. Both tomatoes and onions are good for the heart. They both lower the amount of bad cholesterol in the body, which makes it less likely that someone will have a heart attack or stroke. Lycopene, which is found in tomatoes, and quercetin, an antioxidant flavonoid that is found in large amounts in onions, are both good for the heart.
7. Helps prevent cancer
Cancer is a deadly disease that affects millions of people around the world. Eating tomatoes and onions can lower your risk of getting cancer. Both are high in vitamin C and are good sources of antioxidants. They help lower the risk of getting cancer by fighting the compounds called free radicals that are linked to cancer and stopping them from forming in the body. Anthocyanins, which are found in onions, have been linked to preventing cancer.