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Yacon syrup for weight loss?

Yacon syrup has recently been dubbed as the new miracle drink to aid weight loss. This sweet tasting juice is extracted from the sweet potato like roots of Yacon plants, which is thought to be one of the best sources of fructooligosaccharides, the indigestible sugar molecules that have the ability trick your brain into thinking you just had sugar. Yacon syrup is low in calories, and rich in prebiotics. It has shown to be able to reach the gut flora after ingestion, which can lead to a number of positive effects on health and metabolism. In short, even without the weight loss effect, Yacon syrup is a natural, healthier alternative of sugar and other synthetic sweeteners.

But can Yacon syrup assist weight loss? To date, the weight loss effect of Yacon syrup in humans was only investigated in one study, which was published in the journal of Clinical Nutrition in 2009. During the study, researchers observed the effects 2 daily doses of Yacon syrup on obese and slightly dyslipidemic pre-menopausal women during a 120-day period. The study found that 0.14g fructooligosaccharides/kg body weight/day of Yacon syrup equivalent, that is around 0.25g Yacon syrup/kg body weight/day is safe for human consumption and significantly reduced body weight, waist circumference, BMI, low-density lipoprotein (LDL)-cholesterol levels and fasting serum insulin levels of the test subjects compared to the placebo. In fact, the group consuming Yacon syrup lost 15kg on average in the 120-day period, which I would say is quite remarkable.

The limitation of the study, other than the obvious gender bias, was the small number of subjects used. In addition, no further studies investigating the weight loss effect of Yacon syrup were found. Therefore, the results of the study should be taken with a grain of salt. One study does not mean it is scientifically proven. Nevertheless, Yacon syrup is natural and a good source of soluble fiber, take one or two teaspoons of the syrup 30 minutes to 1 hour before each meal may aid digestion, and may even aid weight loss in the long run. Remember, although safe, too much Yacon syrup can cause stomach discomfort, so reduce intake if you are experiencing any side effects.

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