Friday, December 19, 2025
The Latest Medical News
A Summary of The Latest Medical News: **Low ‘Bad’ Cholesterol Tied to Higher Type 2 Diabetes Risk – Even Without Statins**
New research is turning a long‑held assumption on its head: having **very low levels of LDL cholesterol** (often called *“bad” cholesterol*) may be linked to a **higher risk of developing type 2 diabetes**, whether or not a person is taking statin medications.[1][3]
For years, LDL cholesterol has been the villain of heart health, with lower numbers generally seen as better. Statins, which lower LDL, are widely prescribed to prevent heart attacks and strokes, and have saved countless lives.[1]
However, scientists have also known that **statin use is associated with a modest increase in diabetes risk**, likely because these drugs can reduce insulin sensitivity and insulin secretion, affecting how the body controls blood sugar.[1]
The new twist is that **low LDL itself appears to be linked to higher diabetes risk, independent of statin use.** An Italian team, reporting in *Cardiovascular Diabetology*, followed adults in primary care for about six years and examined how their LDL levels related to new cases of type 2 diabetes.[1][3][4]
They divided people into four LDL groups: **low (<84 mg/dL), medium (84–<107), high (107–<131), and very high (≥131).** Those in the **lowest LDL group had the highest rate of developing type 2 diabetes**, while those with **very high LDL (131 mg/dL or more) had the lowest diabetes incidence**.[1][3][5]
In numbers, diabetes rates per 1,000 person‑years were roughly **27.6 in the low LDL group, 17.4 in the medium group, 13.5 in the high group, and 8.4 in the very high group**.[3][5] Each **10 mg/dL increase in LDL was linked to about a 10% lower risk of diabetes** in this study.[3][4]
Importantly, this pattern held **even after accounting for who was on statins.** Statin therapy did increase diabetes risk in every LDL category, but **people with very low LDL were still more likely to develop diabetes whether they took statins or not.**[1][3][5]
More than half of the participants (about **52%**) were using statins to manage their cholesterol.[1] Over a median follow‑up of around **72 months**, about **13%** of the overall group developed type 2 diabetes.[1] Among statin users, about **20%** developed diabetes, compared with roughly **6%** of those not on statins.[1]
Researchers also looked at how LDL levels might biologically influence diabetes risk. **Pancreatic beta cells, which produce insulin, need cholesterol to function properly.** Very low LDL could disrupt how cells handle cholesterol, potentially **impairing insulin secretion or promoting insulin resistance**, conditions that set the stage for type 2 diabetes.[1]
Despite these findings, experts stress that **statins remain crucial for preventing heart attacks and strokes.** The senior author, Dr. Gaetano Santulli, emphasized that **statins “should absolutely continue to be prescribed according to current guidelines,”** noting that the cardiovascular benefits for most patients far outweigh the modest increase in diabetes risk.[1]
Where this research may change practice is in **monitoring.** The investigators suggest that **people with very low LDL levels — especially those with other risk factors like older age, higher body weight, elevated blood sugar, or hypertension — may benefit from closer blood glucose monitoring over time.**[1][3][5]
Out of the 1,819 new diabetes cases recorded, **787 occurred in the low LDL group, 489 in the medium group, 347 in the high group, and 196 in the very high group.**[1] Within the low LDL category, **risk was highest at the very lowest LDL levels and fell sharply as LDL rose**, whereas in the other groups, risk declined more gradually with higher LDL.[1]
The study also noted that people in the low LDL group tended to be **older, had a higher BMI, more hypertension, and more statin use, and included a lower percentage of men**, all factors that can influence diabetes risk.[1] Even after adjusting for these, the **link between low LDL and higher diabetes risk remained.**[1][3][4]
For patients and clinicians, the takeaway is not to chase higher LDL, but to adopt a **more balanced view of cholesterol management:** continue targeting LDL to protect the heart, while recognizing that **very low LDL might flag individuals who deserve more vigilant screening for type 2 diabetes.**[1][3][
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