What beneficial role does cellulose play in the body?

Cellulose is a type of dietary fiber that is not digestible by humans, but it plays a crucial role in maintaining a healthy digestive system. By providing bulk to the stool, cellulose helps to facilitate regular bowel movements and prevent constipation. This bulkiness allows for the smooth passage of food through the intestines, contributing to overall digestive health. Additionally, by promoting satiety, it can help control appetite and maintain a healthy weight. This makes cellulose an essential component of a balanced diet, particularly in plant-based foods such as fruits, vegetables, and whole grains, where it naturally occurs. In contrast, the other options do not accurately represent the role of cellulose in the body, as it does not provide energy, increase cholesterol levels, or convert proteins into amino acids.