
Grapefruit is a nutrients warehouse. There are lots of nutrients inside it. They are :
- Pectin : soluble fiber, helps to reduce the cholesterol level in blood.
- Bioflavonoid : inhibits hormone which stimulate tumor and cancer cell growth.
- Lycopene : an antioxidant, inhibits the prostate cancer growth.
- Phenolic acid : inhibits the formation of nitrosamine, the cause of cancer.
- Limonoid, terpen and monoterpen : helps to produce enzyme, prevent cancer.
Naringenin : help to reduce your cholesterol level inside your blood.
- Iron : helps in formation of hemoglobin.
- Calsium : helps in formation of strong bone.
- Potassium and magnesium : work as electrolyte inside your body.
- Alpha and beta carotene : helps to maintain the eyes and the skin.
- Vitamin C : maintain your immune system inside your body.
- Folic acid : prevent the dead of fetus.
- Amino acid : helps to strengthen your muscle.
- Vitamin B1 (Thiamine HCl) : help your metabolism system inside your body and Vitamin B6, maintain your nerve and brain.

Reduce the insulin level. Grapefruit has thermogenic effect (produce heat on the body), so it can accelerate burning your fat. According to research at the American Journal of Physiology, sugar in fructose form (like in fruits), have higher thermogenic effect than glucose. But then, this assumption has been shift after Dr. Ken Fujioka invention from center of Nutrients and Metabolism, Scripps Clinic, San Diego, USA. Fujioka has been studying to 100 overweight adult. They divided into three groups. The first group is consume half grapefruit every time before meal, the second group is drink a glass of grapefruit juice every time before meal, and last group is not consume grapefruit at all.

Generally, grapefruit diet is safe for healthy person. If you under treatment and consume certain drug, you should consult first with your doctor. Some elements in grapefruit were known can disturb some drugs, like hypertension drug, cholesterol drug, depressant and antivirus drugs. Substance inside grapefruit also can inhibit enzyme in intestinal which works to break and absorb active ingredients naturally.
Presumable, flavonoid and furanocoumarin become the cause of that enzyme inhabitation. So, the effect is blood pressure still raising up. For you who have problem with obesity, it’s very advisable to losing your weight, by diet or exercise.
In this way, you weight is expected to be on normal weight faster than only consume grapefruit. If you push your self too much to consume this fruit, I suggest you try this fruit taste first, also recognized the side effect. Interested to try?
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