Why your gut tells your pancreas to release insulin after eating
The Incretin Effect in Female Mice With Double Deletion of GLP-1 and GIP Receptors
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
After you eat sugar, your gut releases hormones that tell your pancreas to make more insulin—this study found that two specific hormones (GIP and GLP-1) are responsible for almost all of this signal.
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
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Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
After you eat sugar, your gut releases hormones that tell your pancreas to make more insulin—this study found that two specific hormones (GIP and GLP-1) are responsible for almost all of this signal.
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 517 / 72
Evidence Score
Groups of people are followed over time to see who develops an outcome. Strong for identifying risk factors and associations, but cannot prove causation as firmly as RCTs.
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Claims (6)
GLP-1 and GIP are hormones that increase insulin production and decrease glucagon production when nutrients are consumed, which helps control blood glucose levels.
In female mice, removing the receptors for two gut hormones (GIP and GLP-1) causes blood sugar to rise abnormally after eating sugar, but not after injecting sugar directly into the bloodstream, showing that these hormones are required to regulate blood sugar after meals by helping the liver reduce glucose production.
In female mice, removing receptors for two gut hormones reduces the pancreas's ability to release insulin in response to sugar taken by mouth, but not when sugar is injected directly into the bloodstream, showing that these hormones help the pancreas respond to food entering the gut.
In female mice, when the receptors for two specific gut hormones (GIP and GLP-1) are removed, the body no longer releases extra insulin after eating glucose compared to receiving it directly into the bloodstream, even when blood sugar levels are the same. This suggests these two hormones are responsible for the increased insulin response seen after eating.
In female mice, removing the receptors for two gut hormones (GIP and GLP-1) prevents the normal increase in insulin production after eating glucose, reducing the insulin response by about 65% compared to normal mice, showing that these two hormones are responsible for most of the insulin boost triggered by oral glucose in this model.