Do dietary guidelines serve any useful function? Are they little more than a vague mission statement, aspirational yet irrelevant? Do they influence only the eating habits of the most-informed, most health-conscious consumers? It is an unavoidable anduncomfortable fact that in the 30-odd years since the dietary guidelines first appeared our diet and health appears not to have improved but to have got worse. The last three decades has seen continuously rising rates of overweight and obesity and diet-related diseases in most countries.
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