Probiotics are live microorganisms, usually bacteria or yeast, that are beneficial for your health, particularly your digestive system. They are often called “good” or “friendly” bacteria because they help keep your gut healthy by balancing the natural microbial environment in your intestines.

Here’s how probiotics benefit your body:

1. Improving Gut Health: They can help restore the balance of bacteria in your gut, especially after it has been disturbed by things like antibiotics or illness.

2. Boosting Immune System: Some probiotics can enhance the immune system by stimulating the production of antibodies and helping to fend off harmful bacteria.

3. Digestive Benefits: Probiotics can help with conditions like diarrhea (especially following antibiotic use), irritable bowel syndrome (IBS), and even constipation.

4. Mental Health: Emerging research suggests a connection between gut health and mental well-being, as probiotics may play a role in alleviating symptoms of anxiety and depression through the gut-brain axis.

5. Supporting Skin Health: Some strains of probiotics may help improve conditions like eczema and acne.

Common food sources of probiotics include yogurt, kefir, sauerkraut, kimchi, miso, and other fermented foods. They can also be taken as dietary supplements. Popular strains include Lactobacillus and Bifidobacterium bacteria, and the yeast Saccharomyces boulardii.