The FSA's draft saturated fat and energy intake programme could have "harmful consequences for many", the Sugar Bureau has warned.
In its response to a consultation on the programme, which closes next Tuesday, the Bureau outlined concerns over one key proposal - to reduce fat and sugar in foods through reformulation.
"There is no direct evidence that such an engineering of the food supply would deliver appreciable improvements in public health," said the Bureau. "The possibility of unintended and harmful consequences cannot be ruled out."
The Sugar Bureau added that the draft programme was not founded on sound science and further work was needed to assess how the UK's obesity problem should be addressed.
Dairy UK has also submitted a response to the draft programme, stating it did not support the FSA playing a "monitoring role over developments, since market forces will drive changes".