Followup studies were unable to reproduce the results of the Yang study:<p><a href="http:&#x2F;&#x2F;jn.nutrition.org&#x2F;content&#x2F;130&#x2F;4&#x2F;1058S.full" rel="nofollow">http:&#x2F;&#x2F;jn.nutrition.org&#x2F;content&#x2F;130&#x2F;4&#x2F;1058S.full</a>