Beeturia is characterized by the discoloration of urine following the intake of beets or foods colored with beetroots.
According to Clinical Nutrition Research, beets are rich in oxalate and may contribute to stone formation
Though rare, beetroot may cause anaphylaxis, which is an acute allergic reaction to an allergen to which the body has become hypersensitive.
There is some evidence that beetroot may also cause black and tarry stools due to the presence of altered blood
Beetroot contains nitrates*. According to a publication by the U.S. Department of Health and Human Services, exposure to high levels of nitrates may lead to abdominal cramps
The nitrates in beets may cause a problem here. Pregnant women are more sensitive to the effects of nitrate.
Studies suppose that extreme intake of table beetroot may cause several disturbances not only in healthy patients but also in those dealing with metal-accumulating diseases