Studies have shown that grapefruit juice can help lower glucose levels. It also helps regulate insulin levels, when consumed on a daily basis.
Diabetic patients may see a significant decrease in glucose levels, when they make a habit of drinking grapefruit juice. Mice who drank grapefruit juice regularly saw a major decrease in glucose levels, according to Time magazine. This decrease was similar to the one seen when patients take the drug Metformin. Grapefruit juice also aids in repairing gums, decreasing appetite and strengthening the immune system. The smell of grapefruit also has benefits. Citrus smells are shown to reduce stress and anxiety.