Protein intake, bone health can be improved by eating more legumes,less red meat - Hindustan Times

Protein intake, bone health can be improved by eating more legumes, less red meat

Aug 26, 2023 08:43 PM IST

Study finds pea, bean-based foods can replace red, processed meat without harming bone health.

According to a University of Helsinki study, substituting red and processed meat with pea-protein intake, b and faba bean-based foods ensures enough amino acid intake without having any negative effects on bone metabolism.

Eating more legumes and reducing red meat can improve bone health.
Eating more legumes and reducing red meat can improve bone health.

"Decreasing the consumption of red and processed meat in the diet to the upper limit of the Planetary Health Diet while increasing the consumption of legumes cultivated in Finland, such as peas and faba beans, is safe from the perspective of protein nutrition. Similarly, bone health is not compromised by such a dietary change either," says Docent Suvi Itkonen from the Faculty of Agriculture and Forestry.

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In the BeanMan study, 102 Finnish men followed a study diet for six weeks.

- One group consumed 760 grams of red and processed meat per week, which accounted for 25% of the total protein intake. The amount corresponds to the average protein consumption of Finnish men.

- The other group consumed food products based on legumes, mainly peas and faba beans, corresponding to 20% of the total protein intake. In addition, the amount of red and processed meat consumed per week in this group amounted to the upper limit of the Planetary Health Diet (200 g or 5% of the total protein intake).

Otherwise, the study subjects followed their habitual diet but were not allowed to eat other red or processed meat or legumes than those provided by the study.

The researchers did not find any differences between the dietary groups in markers of bone formation or resorption. Neither did the intake of calcium or vitamin D differ between the groups. Calcium intake was in line with the current dietary recommendations, and the intake of vitamin D was very close to the recommendations. Mean essential amino acid and protein intakes met the recommendations in both groups.

"Reducing red meat consumption is extremely important in terms of environmental impact," Itkonen notes.

Increasingly plant-based diets are becoming more and more popular, and the recently updated Nordic Nutrition Recommendations also emphasise the restriction of meat consumption and the moderation of dairy consumption.

"In this study, the subjects consumed dairy products as in their habitual diets, thus their calcium and vitamin D intakes were unchanged. However, in terms of bone health, it is important to bear in mind that if one reduces the amount of dairy in the diet, it is necessary to ensure the intake of calcium and vitamin D from other sources. These sources can be plant-based beverages and yoghurt-like products fortified with those nutrients or, when necessary, dietary supplements," Itkonen points out.

Other findings in the BeanMan study related to, among others, lipid metabolism, gut health and nutrient intakes will be published later.

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