Why raw beans can make you sick
Intracellular inflammatory signalling cascades in human monocytic cells on challenge with phytohemagglutinin and 2,4,6-trinitrophenol
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
A protein in raw red kidney beans (PHA) and a chemical (TNP) both trigger immune cells to react strongly, causing inflammation and cell damage in a lab test.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
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Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
A protein in raw red kidney beans (PHA) and a chemical (TNP) both trigger immune cells to react strongly, causing inflammation and cell damage in a lab test.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 53 / 44
Evidence Score
A snapshot of a population at a single point in time. Can identify correlations and prevalence, but cannot determine the direction of cause and effect.
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Claims (4)
Uncooked legume lectins, particularly phytohemagglutinin in red kidney beans, induce severe gastrointestinal toxicity and systemic inflammation in humans at low doses.
When lab-grown human immune cells are exposed to PHA or TNP, they start dying in different ways depending on how much and how long they’re exposed, and both chemicals harm the cells more the longer or stronger the exposure.
When these two chemicals are added to human immune cells in a dish, the cells turn on genes and internal pathways that are usually used to signal inflammation — like sounding an alarm.
PHA and TNP are foreign substances that the body’s first-line immune cells recognize as threats, causing them to start an inflammatory response — like raising an alarm bell.