Numerous recent studies have highlighted the positive effects of various probiotic strains on the immune system. Researchers in Korea discovered that daily intake of probiotic yogurt significantly enhanced the activity of crucial immune cells in older adults. Their findings indicated that regular consumption of yogurt containing two specific probiotic strains (L. paracasei and B. lactis) along with heat-treated bacteria (L. plantarum) increased the function of natural killer cells, which are vital for defending against viral infections.
Furthermore, recent laboratory research revealed that a novel inactivated probiotic from Ganeden, named Staimune, exhibited immune activation and anti-inflammatory properties comparable to those of live probiotics. Results from this Swedish study may strengthen the marketing of probiotic food and beverage products aimed at individuals at risk for or undergoing treatment for colon cancer. The World Cancer Research Fund International states that colorectal cancer affects around 1.4 million individuals each year and is on the rise globally.
Manufacturers are leveraging findings from these studies to enhance their products and ingredients. The functional foods sector—designed to provide specific health benefits alongside essential nutrients—is a rapidly expanding market, potentially valued at around $15 billion. Companies are also acquiring probiotic firms or incorporating beneficial bacteria into various products. For instance, PepsiCo purchased probiotic beverage company KeVita last fall and introduced its Tropicana Essentials Probiotics line earlier this year, marking the first time probiotics have entered the mainstream juice market. Additionally, the venture capital division of General Mills led a $6.5 million Series D funding round in March to support Farmhouse Culture, a startup specializing in fermented and probiotic foods and beverages.
In the United States, probiotics are categorized as drugs, and for a product label to legally assert that it is “intended to prevent, treat, or cure a human disease or condition,” rigorous safety and clinical trials must be conducted. This recent study could serve as an important step in reinforcing the scientific foundation necessary for such claims. Notably, products like Citracal, available at Walgreens, are also exploring the incorporation of probiotics to enhance their health benefits. As the market for probiotics continues to evolve, the integration of scientific research will play a crucial role in shaping consumer trust and product efficacy.