Wholegrains don’t lower cancer risk
In studies conducted over 25 years, Harvard School of Public Health researchers controlled for lifestyle and dietary factors like age, smoking, physical activity, BMI and overall diet (excluding wholegrains).
They found mortality, especially cardiovascular, was reduced in those with a greater wholegrain intake.
Each serving (28g/d) of wholegrain consumption was associated with a 9% drop in cardiovascular mortality, and a 5% reduction in total mortality, the authors said.
Bran intake, either naturally occurring or added to food, showed similar benefits, with up to a 20% reduced risk of cardiovascular mortality.
The authors said that while previous research had found links between wholegrain intake and reduced type 2 diabetes, hypertension and cardiovascular mortality, there was limited evidence around the link to total mortality.