The DRVs underpin the Eatwell guide and were set by expert government committees based on a careful review of all the scientific evidence, acknowledging the strengths and weaknesses of different study designs and the limitations of many of the early cohort studies that the NOF gives credence to in meta-analyses.
It is no coincidence that governments around the world and the World Health Organisation have all settled on broadly similar recommendations.
The most recent official report from the US on diet and cardiovascular disease reinforces the need for replacement of dietary saturated fat with unsaturated fat as an effective policy for reducing risk of heart disease.
Mindful of evidence for moderate rather than low fat diets, the US experts also increased the fat DRV to up to 35% of energy – a figure in place in the UK for 30 years.
The NOF report is largely an opinion piece and government advice remains unchanged.
- Judy Buttriss is director general of the British Nutrition Foundation