People who have had a kidney transplant and have high cholesterol are slightly more likely to develop diabetes after the transplant — for every little rise in their cholesterol, their chance of getting diabetes goes up a tiny bit.

We analyzed the available evidence on whether high cholesterol is linked to a higher chance of developing diabetes after a kidney transplant. What we’ve found so far is that 38 studies or assertions suggest a connection — for every small increase in cholesterol levels, there’s a slight rise in the likelihood of developing diabetes after the transplant [1]. No studies or assertions in our review contradicted this pattern. This doesn’t mean high cholesterol causes diabetes after a transplant. It means that among people who’ve had a kidney transplant, those with higher cholesterol levels tend to also have a somewhat higher chance of developing diabetes over time. The increase in risk is small — not dramatic — and it’s tied to how cholesterol levels change, not to any single number. We don’t know if lowering cholesterol would reduce this risk, because the evidence doesn’t show whether changing cholesterol affects diabetes outcomes. We also don’t know if other factors — like medications after transplant, weight, or genetics — might be playing a role alongside cholesterol. The evidence we’ve reviewed leans toward a small, consistent association, but it doesn’t prove cause and effect. There’s no data showing that cholesterol is the direct driver, or that treating it changes the outcome. We only see a pattern: higher cholesterol and higher diabetes risk appear together in these patients. If you’ve had a kidney transplant and are watching your cholesterol, this doesn’t mean you need to panic. But it does suggest that keeping cholesterol in a healthy range — through diet, movement, or medication if needed — might be one part of a broader strategy to support your long-term health. Always talk with your care team before making changes.