There are different philosophies on tomatoes. Here is a brief summary. Ayurveda (but not all Ayurvedic nutritionists) advises not eating them, since the cause toxic build-up and stimulate heat and desire. Chinese medicine claims tomatoes can cool the blood on hot days. Those in the Mediterranean embrace the tomato, where apparently in the northern part of Europe the tomato is considered by some to be poisonous. Take your pick.
Tomatoes are acidic, meaning they are stimulating and sour. To some, tomatoes can irritate the digestive tract and are recommended to avoid if you have GI tract inflammation. These irritating qualities can be enhanced when cooked or sun-dried, since the flavors become more pungent and hot. The tomato flesh in general is easy to digest, and the seeds and skins can be irritating for some.
As for nutritional value, tomatoes have a high concentration of the antioxidant lycopene. It also has high levels of potassium and vitamins C, K and A, along with others.
I personally embrace them, but also eat them in balanced quantities. Tomatoes can aggravatePitta in the digestive tract. However, their cooling properties are refreshing on warm days. My personal favorite is the Early Girl tomato. I don’t have a problem grabbing and taking a bite in Early Girl tomatoes. They are juicy and have a sweetness that makes my mouth water.