In addition to promoting weight loss, glucomannan may improve a number of risk factors for heart disease.
According to a systematic review of 14 studies, glucomannan can :
Lower total cholesterol by 19 mg/dL (0.5 mmol/L).
Lower LDL cholesterol by 16 mg/dL (0.4 mmol/L).
Lower triglycerides by 11 mg/dL (0.12 mmol/L).
Fasting blood sugar by 7.4 mg/dL (0.4 mmol/L).
The main mechanism by which it reduces blood cholesterol is by decreasing absorption of cholesterol in the gut.
According to these studies, adding glucomannan to your diet could potentially lower the risk of developing heart disease and type 2 diabetes.
Being a water-soluble fiber, glucomannan has also been successfully used to treat constipation .
Bottom line: Glucomannan can cause improvements in several important risk factors for heart disease, including total cholesterol, LDL cholesterol, triglycerides and fasting blood sugar.