3 Brains The Gut-Brain Strain - Containing one of the most researched probiotic strains Bifidobacteriam Longum BB536 to help support intestinal/gastrointestinal health. The gut brain contains approximately 100 million neurons and it can work both independently of, and in conjunction with, the head brain. Studies suggest gut microbiota communicate with the head brain and may play a role in mood and cognition. Conveniently shelf stable with no need to refrigerate. There is an intricate communication network between the heart, the brain, and the gut. Together these three “brains” influence mental, emotional, and physical health. Three Brains supplements help maintain optimal brain health by supporting that critical relationship. There is growing evidence that nutrients from whole foods, exercise, and supplements are effective, non-invasive ways to support mental health and cognition.