The NDA Panel delivered an opinion on the scientific substantiation of a health claim related to diacylglycerol oil and reduction of body weight, submitted pursuant to Article 13.5 of Regulation 1924/2006. The food constituent, diacylglycerol (DAG) oil is sufficiently characterized in relation to the claimed effect. Furthermore EFSA defined that weight loss is a beneficial physiological effect for overweight subjects. Indeed, few ingredients received a positive opinion for their beneficial effect on body weight like glucomannan. But EFSA gave a negative opinion to DAG like hypo-caloric snacks (KOT products) for weight reduction last September.
However, the results from six randomized controlled trials with respect to the effect of DAG oil (as a replacement of TAG oils) on body weight are inconsistent and apparently unrelated to the DAG dose, study size or study duration, and the evidence provided in support of mechanisms by which DAG oil could exert the effect in humans is not convincing. One unpublished meta-analysis on the effects of DAG oil (as compared to TAG oils) on body weight in humans was also provided. The meta-analysis had potential sources of bias and did not provide additional informations for the scientific substantiation of the claim. The Panel concludes that a cause and effect relationship has not been established between the consumption of DAG oil and a reduction in body weight.
This opinion shows that more clinical studies are required to obtain a positive opinion from NDA panel related to ingredient effects on weight loss and the experts of Nutraveris can help you to put in place clinical study to obtain favorable claim.
References: EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Scientific Opinion on the substantiation of a health claim related to diacylglycerol (DAG) oil and reduction of body weight pursuant to Article 13(5) of Regulation (EC) No 1924/2006. EFSA Journal 2011;9(12):2469. [17 pp].
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Scientific Opinion on the substantiation of a health claim related to “hypo-caloric snacks (KOT products)” and “contributes to reduce adipocyte size at the abdominal level in the context of a low-calorie diet” pursuant to Article 13(5) of Regulation (EC) No 1924/2006. EFSA Journal 2011;9(9):2381. [10 pp.].
EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA); Scientific Opinion on the substantiation of health claims related to konjac mannan (glucomannan) and reduction of body weight (ID 854, 1556, 3725), reduction of post-prandial glycaemic responses (ID 1559), maintenance of normal blood glucose concentrations (ID 835, 3724), maintenance of normal (fasting) blood concentrations of triglycerides (ID 3217), maintenance of normal blood cholesterol concentrations (ID 3100, 3217), maintenance of normal bowel function (ID 834, 1557, 3901) and decreasing potentially pathogenic intestinal microorganisms (ID 1558) pursuant to Article 13(1) of Regulation (EC) No 1924/2006. EFSA Journal 2010;8(10):1798. [27 pp.].