Your Guide to Probiotics
- Mary Kate Fuller, MS, CNS, LDN, CHHP

- Jun 10, 2021
- 3 min read
Updated: Jun 17
A healthy gut is more than just good digestion—it’s the foundation of total wellness. Your gut houses trillions of bacteria (between 300 and 1000 species!) that make up what’s known as your gut microbiome. This community of bacteria supports everything from mood and metabolism to immunity and inflammation.
Why Probiotics Matter:
70–80% of your immune system lives in the gut
The gut produces key brain chemicals like serotonin, GABA, and dopamine
It influences hormone metabolism, nutrient absorption, and detoxification
It helps prevent leaky gut, inflammation, and autoimmunity
In short: a healthy gut = a healthier you.
What Are Probiotics?
Probiotics are live, beneficial microorganisms that help maintain or restore a healthy gut flora. You naturally have some in your digestive system, but factors like antibiotics, stress, sugar, poor sleep, and processed food can wipe them out.
When good bacteria are low—or harmful ones overgrow—you may experience:
Bloating, gas, diarrhea or constipation
Skin issues like eczema or acne
Brain fog, fatigue, or mood swings
Sugar cravings and poor appetite control
Weight gain or stubborn fat
Food sensitivities
Weakened immunity
How to Get Probiotics (and Prebiotics!)
Probiotic-Rich Foods
Fermented foods are nature’s probiotics. Aim to include these regularly:
Non-Dairy Sources:
Sauerkraut (1 tbsp = ~1.5 trillion CFUs!)
Kimchi
Pickled veggies (raw, unpasteurized)
Fermented meats (like salami with active cultures)
Kombucha
Miso, natto, tempeh
Dairy Sources:
Kefir (more potent than yogurt)
Plain yogurt (with active cultures)
Aged cheese
Buttermilk, sour cream, cottage cheese (check for live cultures)
Prebiotic-Rich Foods
Prebiotics are the fuel for probiotics—they help them grow and thrive.
Try:
Garlic, onions, leeks
Asparagus, artichokes, eggplant
Apples, bananas (green)
Flaxseed, jicama, legumes
Dandelion greens, endive
Jerusalem artichoke (sunchoke), chicory root
These fibrous foods feed good bacteria and promote the production of butyric acid, which heals and energizes your gut lining.
Should You Supplement?
If your diet lacks fermented foods—or you've had antibiotics, chronic stress, skin conditions, or digestive issues—adding a probiotic supplement may be helpful.
Top Benefits of Probiotic Supplements
Enhance digestion and nutrient absorption
Restore balance after antibiotic use
Support immune health
Improve mood and mental clarity
Reduce bloating, gas, IBS, and colitis
Improve blood sugar regulation
Decrease inflammation
Support skin health and detoxification
Help with weight balance and appetite control
Probiotics can be especially important for:
Infants/children born via C-section or not breastfed
Those with eczema, colic, ADHD, or frequent antibiotic use
Kids with food sensitivities or picky diets
Understanding CFUs (Colony Forming Units)
CFUs tell you how many live microorganisms are in one dose of your supplement.
Health Status | Suggested CFUs |
General Wellness | 5–25 billion |
Post-antibiotics or Gut Issues | 25–50 billion |
Severe Digestive, Skin, or Mood Issues | 50–250 billion (under guidance) |
Tip: Rotate your probiotic supplement every few months to increase microbial diversity.
Popular Probiotic Strains (and What They’re Good For)
Strain | Known For |
Lactobacillus acidophilus | Immune support, digestion, UTI prevention |
Lactobacillus plantarum | IBS support, post-antibiotic recovery |
Bifidobacterium lactis | Inflammation reduction, allergy relief |
Lactobacillus casei | Gut lining support, immune modulation, blood sugar |
Bifidobacterium breve | Bloating, constipation, yeast balance |
Lactobacillus paracasei | Post-antibiotic gut repair, inflammation relief |
Lactobacillus salivarius | Oral and gum health, inflammation reduction |
Lactobacillus rhamnosus | Immunity, diarrhea, UTI support |
Bifidobacterium bifidum | Mineral absorption, IBS relief, vaginal health |
Bifidobacterium longum | Liver, mood, and allergy support |
Bifidobacterium infantis | Infant gut development, colic, digestion |
Lactobacillus helveticus | Mood and stress balance, calcium absorption |
Saccharomyces boulardii | Diarrhea, C. diff, H. pylori, gut lining protection |
Recommended Probiotic Brands
We recommend choosing high-quality brands that guarantee CFU count through expiration, use diverse strains, and are third-party tested. Some of our trusted options include:
Designs for Health (ProbioMed line)
Garden of Life Dr. Formulated
Klaire Labs
Flora
Jarrow Formulas
Orthomolecular
Genestra
Nordic Naturals (especially for kids)
Renew Life
Pendulum
Thorne
Xymogen
Just Thrive
These are available in our [Purely Rooted Nutrition & Wellness Online Store].
Final Thoughts
Probiotics are not a one-size-fits-all solution—but when used correctly, they’re one of the most powerful tools for gut healing, immune support, mental clarity, and metabolic balance.
Want help choosing the right probiotic for your health goals? Book your free 15-minute consultation with us today!

Hasan, N., & Yang, H. (2019). Factors affecting the composition of the gut microbiota, and its modulation. Pubmed. https://pubmed.ncbi.nlm.nih.gov/31440436/.
Brady, ND, DC, CCN, DACBN, D. M., & Spear, MS, CNS, N. (2019). ProbioMed. Designs for Health. https://www.designsforhealth.com/.
IFM. (2019). Probiotic and Prebiotic Foods. The Institute For Functional Medicine. https://www.ifm.org/.








Comments