Konjac root contains a soluble dietary fiber called glucomannan, which has the ability to absorb water and expand in the stomach. This can create a feeling of fullness and reduce appetite, potentially helping with weight management by promoting reduced calorie intake. Some people use glucomannan supplements as an aid for weight loss.

Konjac's glucomannan fiber is also beneficial for digestive health. It can help regulate bowel movements and alleviate constipation by softening stools and promoting regularity. Additionally, the prebiotic properties of glucomannan may support the growth of beneficial gut bacteria, contributing to overall digestive well-being.

Some studies suggest that konjac glucomannan may have a positive impact on blood sugar levels. It may slow down the absorption of sugar and carbohydrates in the digestive system, which can lead to more stable blood sugar levels. This potential benefit makes konjac a topic of interest for individuals with diabetes or those looking to manage their blood sugar.