Nutrition: Benefits from dieting are often lost

Nutrition: Benefits from dieting are often lost

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Long-term effects of a change in diet

Adequate evidence suggests that most diets and forms of diet over a six-month period lead to rather modest weight loss and improvements in cardiovascular risk factors. After 12 months, the weight loss decreased and the improvements in cardiovascular risk factors largely disappeared.

The current study by Monash University in Australia found that weight loss and cardiovascular benefits after a six-month change in diet were largely reversed after a period of twelve months. The results of the study were published in the English language journal "BMJ".

Obesity continues to increase worldwide

The number of people with obesity worldwide has almost tripled since 1975, resulting in a wealth of nutritional recommendations for weight control and reducing cardiovascular risk.

Relative effectiveness of dietary patterns and diets?

So far, however, there has been no comprehensive analysis comparing the relative effects of different diets and diets on weight loss and improving cardiovascular risk factors such as blood pressure and cholesterol. An international team of researchers has now taken on the task of determining the relative effectiveness of dietary patterns and popular diets in overweight or obese adults.

121 studies were evaluated

The current investigation is based on the results of 121 randomized studies with a total of 21,942 participants who had an average age of 49 years. The participants either adhered to popular diets or were part of the control group. The studies reported weight loss and changes in cardiovascular risk factors.

Macronutrient patterns of the diet were noted

The researchers differentiated the diets and diets according to their macronutrient patterns and assigned them to 14 popular, named nutrition programs, including popular concepts such as Atkins, DASH and Mediterranean nutrition.

How did different diets affect you?

Compared to a normal diet, low-carb and low-fat forms of diet resulted in a similarly modest weight reduction (between four and five kilograms) and a drop in blood pressure after six months. Moderate macronutrient diets resulted in somewhat less weight loss and lower blood pressure.

Improving HDL Cholesterol Levels?

Among the popular diets, Atkins, DASH and the Sears diet had the greatest effects on weight loss (between 3.5 and 5.5 kilograms) and blood pressure after six months compared to a normal diet. However, none of these diets significantly improved healthy HDL cholesterol or reactive C protein levels.

The benefits achieved disappeared after twelve months

Overall, weight loss decreased after 12 months for all dietary patterns, while benefits for cardiovascular risk factors essentially disappeared for all diets, with one exception: the Mediterranean diet.

Simply choose the right form of nutrition for you

Differences between diets are generally trivial to small, which means that for short-term cardiovascular benefits, people can choose their preferred diet from many of the available diets without having to worry about the benefits Research group.

How can weight loss be maintained?

Further research should not focus on a specific choice of diet and instead focus on how best to maintain weight loss. (as)

Author and source information

This text corresponds to the specifications of the medical literature, medical guidelines and current studies and has been checked by medical doctors.


  • Long Ge, Behnam Sadeghirad, Geoff DC Ball, professor, Bruno R da Costa, Christine L Hitchcock et al .: Comparison of dietary macronutrient patterns of 14 popular named dietary programs for weight and cardiovascular risk factor reduction in adults: systematic review and network meta -analysis of randomized trials, in BMJ (published April 1, 2020), BMJ

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