Because probiotic bacteria are acquired naturally from environmental sources in addition to growing normally in the human body, it is safe for humans to consume probiotics. Furthermore, Health Canada has labeled probiotics a natural health product (NHP) safe for human consumption. Common foods we eat each day contain probiotic bacteria that enrich our intestinal flora. For example, yogurt and cheese contain probiotic bacteria. There has been a recent upsurge in interest on probiotics amongst researchers as the positive effects of probiotics on the gut microbiome and recognition of their great therapeutic potential for a wide variety of conditions increases.