Key points from article :
In diabetics, metformin produces a decrease in blood glucose.
As a bonus, it decreases blood cholesterol and improves cardiovascular health.
Also associated with a decreased incidence of cancer and improved brain function.
Large trial showed that diabetics treated with metformin had a greater survival rate than matched non-diabetic control patients.
Common, but minor, side-effects include diarrhea, nausea, vomiting, and gas.
Overall it has a very good safety record.
Do not take it if you have any problems with liver or kidney function.
Preventative treatment needs to be well tolerated, e.g. 500 mg twice a day.
