Wednesday, 21 November, 2018

Having a diverse diet may actually be harmful

Samantha Long | 11 August, 2018, 15:49

"Recent evidence suggests this approach may not help improve people's eating habits, nor prevent obesity in places where processed, unhealthy food options are very common, wide-ranging and relatively affordable".

The nutritional advice is clear: eat a wide range of foods to ensure that you're getting a balanced diet. Marcia C.de Oliveira Otto, lead author of the latest advisory, says that could be a big problem.

"We looked at all the evidence that was out there and saw a link between dietary diversity and a greater intake of both healthy and unhealthy foods", according to Otto, an assistant professor of at the University of Texas's Department of Epidemiology, Human Genetics and Environmental Sciences.

"Most dietary guidelines around the world include a statement of eating a variety of foods", Mozaffarian told ABC News. For instance, one study revealed how adding ketchup or mayonnaise to French fries and cream to brownies for dessert delayed the sense of feeling full and increased consumption by almost 40 percent.

When developing the recommendation statement, the AHA group performed a literature review of observational and interventional studies published between 2000 and 2017 in adults looking at the effects of diet on body weight and obesity.

Jose reacts to win over Leicester
Alderweireld was heavily linked with a move to Old Trafford all summer but Spurs never even received a bid from United. Boss Jose Mourinho selected the £89m signing despite his lack of pre-season following an extended post-World Cup rest.

At issue is what constitutes as "dietary diversity".

"The phenomenon of sensory satiation is very important - when something new is presented to us, we tend to eat more and more", Rao said. Limited evidence shows that eating a variety of foods is actually associated with more calories, poor eating patterns and weight gain.

The study authors concluded that dietary recommendations should emphasize adequate consumption of plant foods, such as fruit, vegetables, beans, and whole grains. Low-fat dairy products, non-tropical vegetable oils, nuts, poultry, and fish should also be promoted.

In addition, the public should be warned to limit the intake of red meat, sweets, and sugary drinks. "Nowadays, "everything in moderation" can be misinterpreted and feed into the food industry".

According to the American Heart Association's latest scientific statement, a diverse diet, otherwise called a "varied diet", could just lead to eating more calories, which in turn increases risks of obesity.

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