“Everyone should take a probiotic.”
Strong confidence against universal use, not against every probiotic. Evidence and clinical recommendations apply to specific strains and indications.
There is no established recommendation that everyone needs a probiotic. Benefits depend on the strain, dose and reason for taking it. A product that helps in one condition may not help a healthy person or someone with a different problem.
A supplement can help with a specific need without being useful or necessary for everyone.
Can specific probiotics help certain conditions?
Selected strains may help selected conditions; choose evidence for the specific indication.
Safety note: Side effects are usually minor in healthy people, but rare serious infections have occurred, especially in severely ill or immunocompromised patients. Preterm infants need specialist oversight.
Talk to a healthcare professional if: Ask the medical team before use with severe illness, immune suppression, a central line or a preterm infant.
You do not need a probiotic just because it is marketed as good for your gut. Use one for a specific reason with evidence behind the strain.
Before buying a probiotic, decide what problem you are trying to solve and check whether that strain has evidence for it.