Protein bars have become a popular choice for people looking to boost their protein intake and maintain a healthy diet. Marketed as a quick and convenient source of protein, these bars have seen a significant increase in demand, with the global protein bar market projected to grow from £3.71 billion in 2022 to £5.60 billion by 2029, according to Fortune Business Insights.
While protein is essential for repairing and building tissue, reducing hunger, and potentially aiding in weight loss, the health claims of protein bars have come under scrutiny. Despite the health halo associated with the term ‘high-protein,’ many of these bars contain high levels of calories and unhealthy saturated fats, classifying them as ultra-processed foods.
According to Naveed Sattar, a professor of cardiometabolic medicine at Glasgow University’s School of Cardiovascular and Metabolic Health, there is limited evidence to support the health benefits of protein bars. While protein is known to suppress appetite, the overall health-giving properties of protein bars have not been extensively studied.
Rob Hobson, a sports nutritionist and author of Unprocess Your Life, highlights the confusion between ‘high protein’ and ‘healthy’ among consumers. He describes protein bars as a combination of various ingredients, sweeteners, and emulsifiers, which may negatively impact gut health. Common ingredients such as maltitol, whey protein, sucralose, and inulin have been associated with potential side effects including diarrhoea, bloating, and impacts on gut bacteria diversity.
Studies on the effects of protein bars have yielded mixed results. While a study by researchers at Arizona State University suggested that daily consumption of protein bars could lead to a significant increase in fat mass, another study of elite athletes concluded that protein bar consumption improved physiological adaptation after training. The limited research indicates the need for further investigation into the overall health implications of consuming protein bars.
With the growing popularity of protein bars and their widespread availability, it is important for consumers to be aware of the potential drawbacks and limitations of these products. While they offer a convenient source of protein, the overall impact on health and well-being remains a topic of ongoing research and debate.
