Digested food fragments can quiet or trigger immune responses
Ashaolu TJ
Food Forest
The beans and peas you grow in your garden break down during digestion into tiny protein fragments that can nudge your immune system toward calm instead of inflammation, the same way peptides from fermented dairy and fish do.
When your body breaks down proteins from foods like beans, peas, milk, eggs, or fish, it doesn't just get amino acids for energy. Sometimes it releases small chains of amino acids called peptides that act like tiny signals to immune cells, telling them to calm down or ramp up depending on what's needed. Scientists are still figuring out exactly how this works in real people, but the early evidence suggests that what you eat and how it's processed or fermented could shape these signals in ways that support immune balance.
Key Findings
Food-derived peptides from dairy, egg, marine, and plant proteins can shift macrophages between M1 (inflammatory) and M2 (calming) states
In resting immune cells peptides often boost inflammatory signals like TNF-alpha and IL-6, but in already-activated cells they can suppress those same signals and boost anti-inflammatory IL-10
Peptides can shift T-helper cell responses away from allergy-associated Th2 pathways toward Th1 and regulatory T-cell tolerance, likely by interacting with TLR receptors and NF-kB/MAPK signaling
chevron_right Technical Summary
Small protein fragments released when we digest foods like milk, eggs, fish, and beans can talk directly to immune cells, sometimes calming inflammation and sometimes revving it up depending on context.
Abstract Preview
Original paper
Food peptides and the immune system: A review of their effects on macrophages, lymphocytes, and cytokine production.
Food-derived bioactive peptides (FDBPs) are short amino acid sequences encrypted within dietary proteins that can be released during digestion, food processing or fermentation and exert immunomodul...
open_in_new Read full abstractAbstract copyright held by the original publisher.
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