Metformin primarily reduces blood sugar by acting on the liver. It decreases the liver’s production of glucose, a key process in controlling blood sugar levels.
Secondly, metformin enhances insulin sensitivity in muscle and fat cells. This means these cells absorb more glucose from the bloodstream, further lowering blood sugar.
Finally, metformin slows down glucose absorption from the intestines after meals. This effect contributes to a more gradual rise in blood sugar following food consumption, preventing sharp spikes.
Detailed Mechanisms
The exact mechanisms are complex but involve several pathways. For example, metformin affects the activity of enzymes involved in glucose production in the liver, suppressing gluconeogenesis. It also increases glucose uptake in peripheral tissues by influencing AMPK, a cellular energy sensor.
Impact on Other Factors
Beyond blood sugar control, Metformin might offer additional benefits. Research suggests potential effects on weight management and cardiovascular health, although these are still under investigation.
| Reduced hepatic glucose production | Less glucose released into bloodstream |
| Increased insulin sensitivity | Improved glucose uptake by muscles and fat |
| Decreased intestinal glucose absorption | Slower glucose entry into bloodstream |
