Merrill Goodman

Certain beta glucans, specifically yeast and fungal β-1,3/1,6 forms, can prime your innate immune system by binding to receptors called Dectin-1 and CR3, triggering a cascade that makes macrophages, monocytes, and neutrophils more responsive to future threats. The strongest clinical signals come from randomized controlled trials showing reduced severity and duration of upper respiratory tract infections (URTIs) in athletes, older adults, and people prone to seasonal illness, though the overall human evidence remains heterogeneous and more large-scale trials are still needed. Research published in PMC confirms the receptor-level mechanisms are well established in preclinical models, with promising but not yet definitive human data. Here is what the current evidence supports: Yeast/fungal β-1,3/1,6 glucans are the forms most studied for immune modulation, with a systematic review of 34 RCTs reporting immunomodulation outcomes including reduced respiratory infection symptoms a...

The strongest Viome alternatives for U.S. health-conscious adults fall into several clear categories: an RNA-focused lab (metatranscriptomics, a technology similar to Viome), a clinically paired glucose-plus-microbiome program, a deep shotgun metagenomics lab, a budget 16S provider, and a packaged interpretation service like Celluvive that pairs testing guidance with consultations and targeted supplements. Here is the shortlist at a glance: RNA-focused lab (e.g., ZOE): Combines microbiome sequencing with continuous glucose monitoring for nutrition-specific predictions. Best if personalized meal scoring is your primary goal. Clinically paired CGM + microbiome program (e.g., DayTwo): Pairs gut data with blood glucose response for metabolic and weight-management goals. Best for metabolic health and diabetes-adjacent concerns. Shotgun metagenomics lab (e.g., Ombre/Thryve): Species-level resolution without the RNA layer. Best for readers who want deeper taxonomic data at a lower price th...

Probiotics are live microbes; prebiotics are the non-digestible food that feeds them. Together, they shape a gut environment where beneficial bacteria can survive and multiply. The practical takeaway: a food-first, paired approach usually delivers the best results, and supplements are most useful in targeted situations rather than as a daily default. Probiotics (live bacteria and yeasts in yogurt, kefir, and fermented foods) replenish and diversify your gut microbiome. Prebiotics (specific fibers in garlic, onions, and whole grains) feed the microbes already living in your gut. Pairing both in the same meal or routine, known as a synbiotic approach, tends to support better microbial survival than either alone. Food sources are sufficient for most healthy adults; supplements can help during antibiotic use, travel, or specific GI conditions. Safety flag: People who are immunocompromised, have a serious illness, or care for premature infants should consult a clinician before using any ...