Should I take probiotics?

Many probiotics on the market are ineffective due to dead bacteria and small quantities of live bacteria (Rhonda Patrick, 4x). The data supporting the use of probiotics for the general population is underwhelming (Andrew Huberman). Pill-form probiotics can be expensive and may potentially cause brain fog (Andrew Huberman). High-dose probiotics are avoided, except during extensive travel (Andrew Huberman). Disrupting the gut microbiome with antibiotics and then administering probiotics can lead to probiotics persistently inhibiting the return of the indigenous microbiome, potentially creating chronic disturbances and predisposing individuals to chronic diseases (Rhonda Patrick). Probiotic supplements are largely unregulated, leading to many products with poor quality control and inaccurate labeling (Andrew Huberman, Rhonda Patrick, 4x). The CFU metric for probiotics is less relevant than the functional activity of the microbes and only accounts for viable organisms (Peter Attia). Excessive intake of certain probiotics, such as Lactobacillus, can lead to negative effects like brain fog and general malaise (Andrew Huberman, 6x). Probiotic supplements with 10 billion colony-forming units (CFUs) are unlikely to be effective (Rhonda Patrick, 4x). The idea that a specific probiotic formula is needed for a specific condition may reflect a limited understanding of probiotics (Paul Saladino, 2x). Dietary changes are the most effective and long-lasting way to alter the gut microbiome compared to probiotics (Paul Saladino). Addressing dietary oxalates is more effective for gut health than solely relying on probiotics (Paul Saladino). The speaker rejects recommendations for whole food diets, probiotics, and fiber supplements, preferring a carnivorous diet of meat, organs, honey, and occasional fruit (Paul Saladino). Killed probiotic formulations can have effects in the gut (Paul Saladino). There is gold-standard level data for probiotics in treating IBS and anxiety/depression (Paul Saladino). Not all probiotics are created equal (Rhonda Patrick). The mood-improving effects of probiotics, magnesium orotate, and coenzyme Q10 were short-lived, disappearing between 10 and 15 weeks (Andrew Huberman). Taking probiotics in a liquid format may be less effective than in a pill format due to challenges in reaching the gut microbiome (Peter Attia). Some probiotic products do not contain the strains or quantities listed on their labels (Andrew Huberman). Chronic use of high-dose pill probiotics may be associated with brain fog (Andrew Huberman). Probiotics have been found to delay the return of the microbiome to a normal state after antibiotic administration (Paul Saladino). Long-term probiotic supplementation requires continuous intake for sustained gut microbial diversity, unlike fermented foods which offer more sustainable benefits (Paul Saladino). Probiotics may not colonize the gut permanently and often wash out, though prolonged use might help with some colonization (Andrew Huberman, Rhonda Patrick, 2x). The species of microbiota proliferated by probiotics may not always be the desired species (Andrew Huberman).

Further research demonstrating consistent efficacy across diverse populations, improved regulation and quality control of probiotic products, and a clearer understanding of specific strains and dosages for targeted health outcomes would strengthen the verdict. Conversely, more evidence of widespread negative side effects or a definitive lack of benefit for most conditions would weaken it.