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New research suggests that obsessing over glucose stability might backfire. A study of 400 people with diabetes found that greater glycemic variability — not less — was linked to better quality of life the next day. Researchers say overly strict glucose management could be doing more harm than good for some patients.
For years, the goal in diabetes management has been to minimize glucose swings — but new research presented at the European Association for the Study of Diabetes (EASD) annual meeting challenges that thinking. The PRO-MENTAL study tracked 400 people with type 1 or type 2 diabetes over 14 days, collecting daily self-reports on quality of life, sleep, mood, stress, and energy alongside continuous glucose monitoring (CGM) data.
Surprisingly, participants who had more glucose variability — not less — reported better quality of life the following day. Higher time spent in the normal glucose range (70–140 mg/dL) also predicted improved next-day well-being. Researchers suggest that overly rigid glucose control may lead patients to avoid everyday activities and foods, ultimately harming their mental and emotional health.
Key Takeaways:
Why it matters: As CGM technology makes glucose data more visible than ever, clinicians need to weigh the psychological toll of aggressive glucose targets. For some patients, a little flexibility may go a long way.
