Eating too many oranges may cause various problems including weight gain, acid reflux, heartburn and abdominal cramps. Even though oranges have multiple benefits for health, including boosting the vitamin C levels and delivering a high dose of fiber, eating too many can lead to several problems.
Besides causing problems related to bowel movement, weight gain and acidity, eating too many oranges can also increase the vitamin C levels in the body dramatically. While this may look like a good thing, in reality an excessive intake of vitamin C is associated with an increased risk of kidney stones, according to Harvard Health. Increasing the amount of fiber in one's diet can lead to a slowing down effect for the bowels. According to "Dietary Guidelines for Americans," a person is supposed to eat 14 grams of fiber for every 1,000 calories. Extra fiber can also lead to other digestive problems, such as abdominal pain and diarrhea. The latter may also lead to dehydration. Oranges are high-acid fruits, which means they can worsen the acid reflux in a person who already has it. They do not tend to increase the acidity of the stomach, but they can intensify an already existent feeling of heartburn.