Mixed
Nutrition policy change is primarily determined by political will and public will rather than the strength of scientific evidence alone.
To influence nutrition policy, do not rely solely on scientific data. Focus on building political will by engaging policy entrepreneurs, creating visible public support, and framing solutions in ways that align with political ideologies (e.g., protecting children) rather than just citing health benefits.
The findings from the present review confirm that evidence is only one component of influencing policy change. For policy change to occur there needs to be the political will, and often the public will, for the proposed policy problem and solution.
Why this rating
Based on a systematic review of 63 qualitative and mixed-method studies, providing strong thematic evidence but not causal experimental data.
Source
Playing the policy game: a review of the barriers to and enablers of nutrition policy change
Katherine Cullerton et al. · Public Health Nutrition · 2016
DOI 10.1017/s1368980016000677
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →