Why is carbohydrate counting used for clients with Diabete

Both Lutz,C., Mazur, E. & Litch, N. (2019). Nutrition and diet therapy: 7th ed. Philadelphia: F.A. Davia talk about

Why is carbohydrate counting used for clients with Diabetes?

Thoughts should be complete and thorough and provide input on each of the area above, please provide references and follow APA format at least 500 words. If you use additional references above and beyond your course textbook, provide referencing to support your thoughts.