What's Hopping? Cricket Protein and Human Gut Microbiota

Study Summary

Edible insects are often considered a nutritious, protein-rich, environmentally sustainable alternative to traditional meat. They represent a new food for North American consumers. While the nutrient composition of several insects is characterized, all potential health impacts have not been evaluated. Crickets contain chitin and other fibers that may influence gut health. In this study, we evaluated the effects of consuming 25 grams/day whole cricket powder on gut microbiota composition, while assessing safety and tolerability. Twenty healthy adults participated in this six-week, double-blind, crossover dietary intervention. Participants were randomized into two treatment arms and consumed either cricket-containing or control breakfast foods for 14 days, followed by a 14-day washout period and assignment to the opposite arm. Blood and stool samples were collected at baseline and after each treatment period to assess liver function and microbiota changes. Results demonstrate that cricket consumption is tolerable and non-toxic at the treatment dose. Cricket powder supported growth of the probiotic bacteria, Bifidobacterium animalis, which increased more than 5.7-fold. Cricket consumption was also associated with reduced plasma TNF-a. These data suggest that eating crickets may improve gut health and reduce systemic inflammation; however, more research is needed to understand these effects and underlying mechanisms.

Primary Outcome

Characterization of microbes in fecal samples using 16s sequencing methodologies.

Conditions Studied

Interventions

• DIETARY_SUPPLEMENT Cricket Protein Powder
• OTHER Placebo control

Study Locations (1)