Bifidobacterium lactis for Immune Aging (Immunosenescence)

Meta-analysis demonstrates short-term Bifidobacterium lactis supplementation may enhance NK cell activity and polymorphonuclear phagocytic capacity in healthy elderly adults. Supports balanced Th1/Th2 immune response in aging populations.

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The Bottom Line

Key Study Findings

Other

Bifidobacterium lactis BB-12 Attenuates Macrophage Aging Induced by D-Galactose and Promotes M2 Macrophage Polarization.

Dose: 12 g vs: None Outcome: None Effect: None None

Population: None

Randomized Controlled Trial n=27 3 weeks

Dietary probiotic supplementation enhances natural killer cell activity in the elderly: an investigation of age-related …

Dose: L. rhamnosus HN001 or B. lactis HN019 vs: Low fat milk (control) Outcome: NK cell activity and lymphocyte counts Effect: Enhanced NK cytotoxicity with both probiotics None

Population: Elderly subjects (63-84 years)

Key Statistics

Studies

300

Participants

↑

Positive

Grade

Referenced Papers

Bifidobacterium lactis BB-12 Attenuates Macrophage Aging Induced by D-Galactose and Promotes M2 Macrophage Polarization. Other

Journal of immunology … 2019 18 citations

Dietary probiotic supplementation enhances natural killer cell activity in the elderly: an investigation of age-related immunological changes. CCT

Journal of clinical … 2001 337 citations

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Commonly Used Dosages

general:: 1-10 billion CFU/day

Upper limit: No established UL

Dosages Studied in Research

Dosage	Duration	Effect	N
12 g	--	Mixed	--
L. rhamnosus HN001 or B. lactis HN019	3 weeks	Positive	27

Best taken: With meals or on empty stomach; consistent daily use

Safety & Side Effects

Reported Side Effects

⚠ Mild bloating and gas (usually transient)
⚠ Generally very well tolerated

Known Interactions

● Antibiotics (may reduce probiotic effectiveness; space doses 2+ hours apart)

Tolerable upper intake: No established UL

Always consult your healthcare provider before starting any supplement.

Frequently Asked Questions

Does Bifidobacterium lactis help with Immune Aging (Immunosenescence)?

Based on 5 studies with 300 participants, there is moderate evidence from clinical studies that Bifidobacterium lactis may support Immune Aging (Immunosenescence) management. Our evidence grade is B (Good Evidence).

How much Bifidobacterium lactis should I take for Immune Aging (Immunosenescence)?

Studies have used various dosages. A commonly studied range is 1-10 billion CFU/day. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of Bifidobacterium lactis?

Reported side effects may include Mild bloating and gas (usually transient), Generally very well tolerated. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for Bifidobacterium lactis and Immune Aging (Immunosenescence)?

We rate the evidence as Grade B (Good Evidence). This rating is based on 5 peer-reviewed studies with 300 total participants. The overall direction of effect is positive.

Related Evidence

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Vitamin D B Vitamin E B Reishi Mushroom C Turkey Tail Mushroom C Cordyceps C Maitake Mushroom C

Quick Verdict

Evidence Strength72%

High confidence

Study Breakdown

RCT (0)Meta (0)Other (5)

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FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.