Lifting weights for three months might help older men who don’t have type 2 diabetes become more sensitive to insulin, but it probably doesn’t help those who already have the disease.

What we've found so far does not support the idea that 12 weeks of resistance training reduces insulin resistance in elderly men without type 2 diabetes but not in those with it. Instead, the evidence we've reviewed leans against this claim. Our analysis of the available research shows that this specific claim is not backed by supporting studies. We examined one assertion suggesting that three months of weight lifting could improve insulin sensitivity in older men without type 2 diabetes but not in those with the condition [1]. However, we found no studies that support this idea. In contrast, 38.0 assertions or data points from the evidence base directly contradict it [1]. This means the current body of evidence we’ve analyzed does not align with the claim as stated. We recognize that resistance training is often studied for its effects on metabolic health, including insulin response. Still, based on what we've reviewed so far, the data does not suggest a clear difference in how elderly men with or without type 2 diabetes respond to 12 weeks of resistance training in terms of insulin resistance. The evidence we’ve analyzed indicates that the claim may be oversimplified or not reflective of current findings. It’s important to note that our analysis is limited to the evidence provided. We do not conclude that the claim is false or true—only that what we’ve reviewed so far does not support it and instead leans against it. As more data becomes available, our understanding may change. Practical takeaway: Don’t assume resistance training only helps insulin sensitivity in older men without type 2 diabetes. The evidence we’ve seen so far doesn’t back that idea.