Cranberries have been used for thousands of years to treat ailments such as appetite loss, blood disorders and digestive problems. It’s a rich source of potent antioxidants called polyphenols that help fight free radical production in the body. Cranberry juice, which is often used as an alternative to the fresh fruit, may increase blood glucose levels.
High Blood Sugar
High blood sugar levels damage blood vessels that supply blood and oxygen to your organs. This can disrupt blood circulation and increase your risk for disease and illness. Elevated blood sugar can lead to kidney problems, diabetes, gum disease, heart attack and eye damage, according to MayoClinic.com. A normal blood sugar level should be between 70 and 110 mg/dL.
Increases in Blood Sugar Levels
Cranberry juice may increase blood glucose levels, according to a study conducted by researchers at Winona University. Scientists studied the impact of unsweetened cranberry juice on glucose levels in healthy adults in a study published in the March 2008 issue of the “Journal of Medicinal Food." Subjects were assigned to water; 480 mL of unsweetened low-calorie cranberry juice; 480 mL of normal calorie cranberry juice; or high-fructose corn syrup beverage. At the end of the study, scientists found that those in the cranberry juice groups had an immediate jump in blood glucose levels 30 minutes after ingestion compared with those who didn’t have cranberry juice, but the levels didn’t remain high after 3 hours.
No Effect
Scientists at the University of Maine examined the effects of cranberry juice on glucose levels in Type 2 diabetics. Patients received cranberry juice or a placebo daily for 12 weeks. Blood glucose levels were measured before and after the study. Scientists discovered that cranberry juice consumption had no effect on blood glucose levels. The findings were reported in the September 2003 issue of “Diabetes Care.”
Interactions
Cranberry juice may interact with several medications, including warfarin, according to the University of Maryland Medical Center. Consult your health care provider before drinking cranberry juice, particularly if you’re taking medications.
