February 11, 2013
By Dr. Mercola
Fruits are loaded with healthy antioxidants, vitamins and minerals, which is why eating them in moderation is fine for healthy people. However, many benefit by restricting their fruit intake.
Fructose, a simple sugar found in fruit, is preferentially metabolized to fat in your liver, and eating large amounts has been linked to negative metabolic and endocrine effects. So eating very large amounts – or worse, nothing but fruit – can logically increase your risk of a number of health conditions, from insulin and leptin resistance to cancer.
For example, research has shown that pancreatic tumor cells use fructose, specifically, to divide and proliferate, thus speeding up the growth and spread of the cancer.
As a general health rule, I recommend limiting your total fructose consumption to about 25 grams per day on average, and that includes fructose from fruit. However, if you have insulin resistance, heart disease, cancer or high blood pressure, you may want to cut it down to 15 grams or less. (Read more)