`Panel Rejects Health Claim for Olive Leaf Extract - Olive Oil Times

Panel Rejects Health Claim for Olive Leaf Extract

May. 20, 2014
Julie Butler

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There is not enough evi­dence to back a claim that olive leaf water extract boosts glu­cose tol­er­ance, a European Food Safety Authority (EFSA) health claims panel has found.

The panel on Dietetic Products, Nutrition and Allergies (NDA) was asked its opin­ion after an appli­ca­tion from Comvita New Zealand Limited in September.

The nat­ural health prod­ucts com­pany had pro­posed the claim that, daily intake of sup­ple­men­tal olive leaf extract polyphe­nols con­tributes to the reduc­tion of the blood glu­cose rise after meals.” It pro­posed a daily intake of five of its OLE (olive leaf extract) cap­sules, each con­tain­ing 400 mg

OLE, in order to pro­vide at least 50mg daily of oleu­ropein. Comvita said the tar­get pop­u­la­tion was adults will­ing to reduce their post­pran­dial (after eat­ing) glycemic response. It will be par­tic­u­larly ben­e­fi­cial to indi­vid­u­als with impaired glu­cose tol­er­ance, a com­mon con­di­tion in the gen­eral adult pop­u­la­tion, par­tic­u­larly among those who are over­weight or obese,” it told EFSA.

Comvita iden­ti­fied two human stud­ies and three ani­mal stud­ies as being per­ti­nent to the claim but in an opin­ion pub­lished ear­lier this month, the NDA panel said no con­clu­sion could be drawn from one of the human stud­ies and the three ani­mal stud­ies as they involved foods not com­ply­ing with Comvita’s spec­i­fi­ca­tions.

It said the other human study shows an increase in glu­cose tol­er­ance appli­cant but the results have not been repli­cated in other stud­ies and no evi­dence had been pro­vided on the mech­a­nism by which the olive leaf water extract could exert the claimed effect. The sci­en­tific evi­dence is insuf­fi­cient to estab­lish a cause and effect rela­tion­ship between the con­sump­tion of olive leaf water extract and an increase in glu­cose tol­er­ance.”



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