Acid Reflux: Tomatoes have malic acid and citric acid, which makes your stomach excessively acidic. Eating too many tomatoes can cause heart burn or acid reflux due to the production of excess gastric acid in the stomach. People who frequently suffer from digestive stress or have symptoms of GERD (gastroesophageal reflux disease) may want to go easy on tomatoes.
Allergies: Tomatoes contain a compound called histamine which may lead to skin rashes or allergies. For people allergic to tomatoes, consumption may lead to severe symptoms like swelling of mouth, tongue and face, sneezing, throat irritation, etc.
Kidney Stones: It may seem surprising but eating too many tomatoes may lead to building up of kidney stones in the body. This is because tomatoes are rich in calcium and oxalate, which when present in excess in the body, are not easily metabolised or removed from the body. These elements start depositing in the body, leading to formation of kidney stones.!