Researchers from the London School of Hygiene and Tropical Medicine (LSHTM) have conducted a comprehensive review shedding light on the nutritional benefits of plant-based meat and dairy alternatives. Their findings suggest that these alternatives offer not only lower levels of saturated fats and higher fiber but also substantially lower environmental impacts compared to their animal-derived counterparts.
Analyzing over 90 studies and reports spanning from 2016 to 2022, the researchers emphasize that plant-based alternatives could serve as a “useful steppingstone” toward a healthier and more sustainable diet. However, they caution that the nutritional content of these alternatives can vary significantly depending on factors such as primary ingredients, processing techniques, and brands.
While acknowledging that plant-based alternatives technically fall under the category of ultra-processed foods (UPFs), the researchers note that some products align with dietary recommendations by being high in fiber and low in saturated fats. They advocate for a clear distinction between less-processed and ultra-processed products to better assess their short and long-term health impacts.
Sarah Najera Espinosa, a research student at LSHTM and the first author of the study, highlights that while whole foods remain the “gold standard” for healthy and environmentally friendly diets, certain plant-based foods show promising environmental and health outcomes. Legume and vegetable-based drinks, as well as legume- and mycoprotein-based meats, are identified as potential stepping stones in the transformation of food systems and diets.
The review also suggests positive health benefits associated with switching to plant-based meats and dairy alternatives, supported by limited evidence indicating a shift could be beneficial. However, the results for plant-based drinks are mixed, with some links to micronutrient deficiencies.
On average, both meat and drink alternatives exhibit comparable salt levels to animal-based products, although meat alternatives tend to contain more sugar, and some plant-based cheese alternatives have been found to contain 50% higher saturated fat than dairy cheese.
It’s worth noting that the study excluded tofu, tempeh, and seitan, considering their long-standing presence in traditional Asian diets and evidence supporting their healthfulness as alternatives.
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