In older adults with type 2 diabetes on medications, which HbA1c range has shown the greatest reduction in mortality in multiple studies?

In older adults with type 2 diabetes on medications, which HbA1c range has shown the greatest reduction in mortality in multiple studies?

• A. HbA1c 6-7%
• B. HbA1c 9-10%
• C. HbA1c 7-8%
• D. HbA1c 8-9%

Answer: (C)

In older adults with type 2 diabetes who are on medication, aiming for very tight glycemic control can backfire because of hypoglycemia risk and treatment burden. Large randomized trials in high-risk or older populations have shown that mortality does not improve—and can even worsen—with aggressive targets (HbA1c well below 7%). Across multiple studies, the mortality benefit is seen most when HbA1c is kept in a middle range, around 7-8%. This range balances reducing hyperglycemia-related risks with avoiding the dangers of overtreatment and hypoglycemia. So, while extremely good control might help some patients, in many older adults the greatest observed reduction in mortality comes from maintaining HbA1c in the 7-8% zone, with even looser targets considered for those with frailty or high hypoglycemia risk.

In older adults with type 2 diabetes who are on medication, aiming for very tight glycemic control can backfire because of hypoglycemia risk and treatment burden. Large randomized trials in high-risk or older populations have shown that mortality does not improve—and can even worsen—with aggressive targets (HbA1c well below 7%). Across multiple studies, the mortality benefit is seen most when HbA1c is kept in a middle range, around 7-8%. This range balances reducing hyperglycemia-related risks with avoiding the dangers of overtreatment and hypoglycemia.

So, while extremely good control might help some patients, in many older adults the greatest observed reduction in mortality comes from maintaining HbA1c in the 7-8% zone, with even looser targets considered for those with frailty or high hypoglycemia risk.