Probiotics
With meals
Probiotics are live beneficial microorganisms, primarily bacteria and yeasts, that support health when consumed in sufficient quantities. Found naturally in fermented foods like yogurt, kefir, and sauerkraut, they are also available as concentrated supplements containing specific bacterial strains. Different strains serve distinct functions, making strain selection important for targeted health goals.
Research Evidence
May help preserve muscle mass alongside dietary interventions after bariatric surgery
LimitedReduces duration and severity of antibiotic-associated diarrhea
StrongSupports immune function and reduces incidence of upper respiratory infections
StrongInfluences mood and cognitive function through the gut-brain axis
LimitedImproves symptoms of irritable bowel syndrome
ModerateMay reduce severity of eczema in children when used preventively
ModerateExpert Evidence
49 references from 5 experts
“When I travel, I will occasionally take a probiotic.”
Transform Your Metabolic Health & Longevity by Knowing Your Unique Biology | Dr. Michael Snyder
1:12:4321 references in 15 episodes from 2021–2025
Safety & Cautions
Side Effects
- Mild bloating or gas during initial use
- Temporary changes in bowel habits
- Brain fog at very high doses of certain lactobacillus strains
- Rare allergic reactions to carrier ingredients
Probiotics are generally well-tolerated by most healthy adults, though immunocompromised individuals should consult a healthcare provider before use. Starting with a lower dose and gradually increasing can minimize initial digestive adjustment symptoms.
Pairs Well With