In 1965 the sugar industry paid three Harvard nutrition scientists to review the evidence on sugar and heart disease, supplying the studies and setting the objective. Their 1967 review called the link limited and pointed toward fat, without disclosing the funding. UCSF researchers documented the arrangement in 2016.
The 2016 authors say the review helped sidetrack the sugar debate, but critics note fat-and-cholesterol theories already had strong momentum. Whether the researchers' conclusions were bought or merely congenial is unsettled, and the sugar and heart disease science itself is still being refined.