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Date of last update: 10/15/2017.

Forum Name: Gastroenterology Topics

Question: Grapefruit juice

 Galician - Mon Jan 12, 2009 10:06 pm

If one eats 3 normal meals and drinks a quart or two quarts of grapefruit juice on a daily basis harmful?
Can one really lose weight by drinking large quantities of grapefruit juice?
Thanks for any information given.
 Debbie Miller, RN - Sun Feb 15, 2009 7:31 pm

User avatar Hello,
There is nothing special about grapefruit juice to aid in weight loss. However, increasing your water intake does help and grapefruit juice is a healthy, fairly low calorie way to get it and should do no harm. In fact, taking a vitamin-c containing fluid or food along with iron-rich foods improves the absorption of iron. I would not expect an overdose problem but it can interact with some medications so if you have a prescription medication, especially meds for cholesterol, ask your pharmacist if this is one that will be affected by the juice. It is acidic and has also been shown to increase the plasma concentrations of simvastatin and simvastatin acid. Grapefruit juice may increase both the cholesterol-lowering effect and the risk of adverse effects of simvastatin.

Some people do swear that the addition of grapefruit juice helps their weight loss efforts. I haven't seen anything scientific to back this. Reducing caloric intake and increasing energy output (exercise) is the most reliable tricks for losing weight.

Best wishes.

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