Bifidobacterium: benefits by goal, the dosage that worked, and the supplements ranked

Dr. Mark Hyman, 31 Aug 2026: Notes that Bifidobacterium is important in regulating dopamine, which can be problematic in kids with ADHD. Source

Ben Greenfield, 16 Aug 2025: Notes that during a wild food diet, bacteria associated with dairy-heavy diets, like Bifidobacterium, dropped significantly. Source

Peter Attia, 18 Dec 2023: States that bifidobacterium, found in yogurts and probiotics, is most well-documented for its impact on GI symptoms such as gas, bloating, diarrhea, and constipation. Source

Andrew Huberman, 28 Feb 2022: States that bifidobacterium can give rise to increases in GABA levels, an inhibitory neurotransmitter that acts as a mild sedative and can reduce irritability. Source

Thomas DeLauer, 16 Jun 2021: Discusses Bifidobacterium, noting that more of this bacteria seems to be correlated with less visceral fat and that a specific strain was shown to significantly reduce visceral fat in a study. Source

Dr. Eric Berg, 11 Jun 2019: States that a lack of Bifidobacterium in the digestive system can lead to problems with brain chemistry. Source

What they said, newest first, one statement each.