Bifidobacterium Longum
Bifidobacterium longum is a well-studied probiotic species generally considered safe for healthy individuals; some strains have FDA QPS/GRAS status. NIH and peer-reviewed clinical trials support tolerability and modest digestive benefits.
What it is
A probiotic bacterial species naturally found in the human gut, used as a live culture in foods and supplements.
Probiotic; supports gut microbiota balance.
Why it's flagged
- rare bacteremia in severely immunocompromised individuals
What regulators actually say
"Bifidobacterium longum ... is included in the QPS list for production purposes."
"Probiotics are generally considered safe for healthy people. However, in people with serious illnesses or compromised immune systems, probiotics could lead to infections."
Regulatory status
United States — FDA
GRAS notices accepted for specific strains (e.g., GRN 49, 268).
European Union — EFSA
Listed in EFSA QPS list for use in food and feed.
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