My 13-year-old niece was diagnosed with type 1 three years ago. She has always had a problem with constipation, even before being diagnosed. Lately, I have read a lot of information that claims clearing up constipation can help lower glucose levels. Her glucose levels are frequently high, over 200 mg/dl [11.1 mmol/L]. And, her latest A1c was 10.3. The doctor did say we should try and keep the constipation under control but said constipation has nothing to do with her glucose levels. Is there a link between being constipated and high glucose levels? Will keeping her constipation under control help lower her levels?