Calls for plant-based alternatives to be labelled with warning signs
Plant-based alternatives could be a ‘useful steppingstone’ towards healthy and sustainable diet
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Plant-based alternatives to meat, cheese, eggs and yoghurt should be labelled and categorised more clearly to ensure people are aware of products that are ultra-processed, a study has suggested.
Plant-based alternatives could be a “useful steppingstone” towards healthy and sustainable diet, although researchers warned nutritional value can vary considerably from product to product.
As part of a review of evidence on plant-based alternatives, academics said the products typically have a lower environmental impact than those derived from animals and “have the potential to be healthier and nutrient-rich”.
However, they added that their nutritional contents are complex.
The main primary ingredient, as well as processing techniques and brand, were all vital to determining its nutritional value and environmental impact.
Ultra-processed foods (UPFs) are usually higher in fat, sugar and salt and contain chemicals, colourings, sweeteners and preservatives that extend shelf life.
While researchers said all plant-based alternatives “technically” fall into this category, they found the nutritional value of some products align with healthy dietary recommendations, including being high fibre and low in saturated fats.
They added that establishing a “clear division” between products that are less processed and ultra-processed could allow for short and long-term health impacts to be better assessed.
First author Sarah Najera Espinosa, a research student at the London School of Hygiene and Tropical Medicine, added: “Although whole foods are still considered the ‘gold standard’ for healthy and environmentally friendly diets, environmental and health outcomes from some novel plant-based foods are promising.
“Our review has demonstrated that some products, such as legume and vegetable-based drinks and legume- and mycoprotein-based meats, have the potential to be a useful steppingstone in the process of food system and dietary transformation if they are carefully selected.”
The research – which excluded tofu, tempeh and seitan, foods that have been part of traditional Asian diets for centuries – analysed more than 90 studies and reports from 2016 and 2022.
Academics said that the “limited evidence” on swapping meat for plant-based alternatives suggest the shift could be good for health, but the results for plant-based drinks were mixed, with links to micronutrient deficiencies.
They also found that most meat and dairy alternatives had more fibre and lower levels of saturated fats, although some cheese alternatives had higher saturated fat levels than their dairy counterparts.
Both meat and drink alternatives had, on average, the same salt levels as animal products, although meat alternatives contained more sugar.
The team suggested that labelling and sub-categorising plant-based alternatives – along with studies to evaluate how dietary changes impact upon the environment – should be a priority for policymakers.
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