Emulsifiers in food and beverage: Market growth and health risks

Emulsifiers are used in thousands of food and beverage products worldwide. They’re in chocolates, cakes, breads, ice creams, margarines, dressings, sausages, pâtés, non-dairy milks, and vegan cheeses - to name but a few. Their ability to stabilise products means there’s really no corner of the industry that doesn’t use them. And it’s this industry dependence that’s taken emulsifiers global market value to $3.7bn (€3.2bn), with a projected CAGR of 4.3%, pushing it to an estimated $4.8bn by 2030 (market analysts Grand View Research). “Emulsifiers improve processed foods’ quality and sensory experience, making them more appealing to consumers,” says a spokesperson for Grand View Research. But, while the industry relies heavily on emulsifiers, scientists continue to raise concerns over potential negative health impacts. In May 2024 it was revealed that they could increase the risk of developing type 2 diabetes , and now they’ve been linked to gut damage and obesity. A study , conducted by researchers at the Institut Pasteur and Inserm in France has shown that when mothers consume dietary emulsifiers, it can negatively affect the gut microbiota of their children. These microbiota disruptions are believed to significantly raise the likelihood of developing chronic inflammatory bowel diseases and obesity later in life. Under the direction of Benoit Chassaing, Inserm research director and head of the Microbiome-Host Interactions Laboratory, researchers examined two common emulsifiers - carboxymethyl cellulose (E466) and polysorbate 80 (E433). Female mice were given these additives for ten weeks before mating, and throughout pregnancy and lactation. The team then studied the gut microbiota of their babies, which had never been directly exposed to emulsifiers. Results revealed that the young of emulsifier-exposed mothers showed major microbiota changes within their first weeks of life, the critical period when mothers naturally transmit part of their microbiota through close contact. The altered microbiota included more flagellated bacteria, which can stimulate immune activity and provoke inflammation, as well as bacteria that adhered more closely to the intestinal lining. Researchers observed that this increased bacterial contact led to premature closure of microscopic openings in the gut that normally allow small bacterial fragments to pass through the mucosa. These passages are essential for helping the immune system learn to recognise and tolerate gut microbes. In mice born to emulsifier-exposed mothers, these openings closed earlier than normal, cutting off communication between the microbiota and the immune system. As the babies matured, this disruption caused heightened immune reactivity and chronic inflammation, greatly increasing the risk of developing obesity and inflammatory bowel diseases. The research team concluded that overall, early-life alterations to gut microbiota - occurring even without direct exposure to emulsifiers - can have lasting effects on immune regulation and metabolic health, increasing susceptibility to chronic disorders in adulthood. They also determined that the effects of emulsifier consumption could extend across generations, saying that further human studies were needed to understand the impact of early-life exposure to these types of food additives. “It is crucial for us to develop a better understanding of how what we eat can influence future generations’ health,” says study author Benoit Chassaing. “These findings highlight how important it is to regulate the use of food additives, especially in powdered baby formulas, which often contain such additives and are consumed at a critical moment for microbiota establishment.” The findings add to a growing body of evidence suggesting that emulsifiers, while essential for product stability and texture, may carry unintended health consequences. Just last week, The Lancet published a series of papers, stating that a diet high in highly-processed foods, which would include emulsifiers, is linked to damage in every major organ. For manufacturers, this raises critical questions about formulation strategies and transparency. As consumer awareness of gut health and metabolic disorders increases, pressure is mounting for the food industry to reassess its reliance on synthetic additives and explore safer, natural alternatives. Regulatory bodies may also face calls for tighter oversight, particularly in products consumed during early life stages, such as infant formula. For now, the science is still evolving, but the conversation around emulsifiers is shifting from functionality to long-term health impact. How the industry responds could shape the future of food and beverage innovation.