The tomato (Solanum lycopersicum) is a fruit from the nightshade family native to South America.
Despite botanically being a fruit, it’s generally eaten and prepared like a vegetable.
Tomatoes are the major dietary source of the antioxidant lycopene, which has been linked to many health benefits, including reduced risk of heart disease and cancer.
They are also a great source of vitamin C, potassium, folate, and vitamin K.
Usually red when mature, tomatoes can also come in a variety of colors, including yellow, orange, green, and purple. What’s more, many subspecies of tomatoes exist with different shapes and flavor.
This article tells you everything you need to know about tomatoes.
Here are the nutrients in a small (100-gram) raw tomato (1Trusted Source):
- Calories: 18
- Water: 95%
- Protein: 0.9 grams
- Carbs: 3.9 grams
- Sugar: 2.6 grams
- Fiber: 1.2 grams
- Fat: 0.2 grams
Carbs comprise 4% of raw tomatoes, which amounts to fewer than 5 grams of carbs for a medium specimen (123 grams).
Simple sugars, such as glucose and fructose, make up almost 70% of the carb content.
Tomatoes are a good source of fiber, providing about 1.5 grams per average-sized tomato.
Most of the fibers (87%) in tomatoes are insoluble, in the form of hemicellulose, cellulose, and lignin (2).
SUMMARYFresh tomatoes are low in carbs. The carb content consists mainly of simple sugars and insoluble fibers. These fruits are mostly made up of water.
Tomatoes are a good source of several vitamins and minerals:
- Vitamin C. This vitamin is an essential nutrient and antioxidant. One medium-sized tomato can provide about 28% of the Reference Daily Intake (RDI).
- Potassium. An essential mineral, potassium is beneficial for blood pressure control and heart disease prevention (3Trusted Source).
- Vitamin K1. Also known as phylloquinone, vitamin K is important for blood clotting and bone health (4Trusted Source, 5Trusted Source).
- Folate (vitamin B9). One of the B vitamins, folate is important for normal tissue growth and cell function. It’s particularly important for pregnant women (6Trusted Source, 7Trusted Source).