Adults aged 40 and over living with obesity now frequently show cholesterol and blood pressure levels indistinguishable from those at a healthy weight, largely due to the widespread use of statins and antihypertensive medications, according to a study published in The Lancet. Researchers from Imperial College London analyzed data from almost 1 million adults across seven countries, finding that pharmacological interventions have successfully narrowed the cardiovascular risk gap that previously defined these populations.
Why Are Cardiovascular Markers Converging?
The primary driver behind this shift is the increased clinical use of cholesterol-lowering drugs and blood pressure treatments. Prof Majid Ezzati of the School of Public Health at Imperial College London noted that in high-income nations, these medications have effectively lowered cardiovascular risk in middle-aged and older adults to levels comparable to individuals with a normal Body Mass Index (BMI).
The study, which examined health data collected between 1990 and 2024, found that the decline in unhealthy cholesterol and blood pressure was most pronounced in those over 40. In countries including England, the United States, Japan, South Korea, and Thailand, older adults with obesity often reached parity with, or in some instances performed better than, their healthy-weight counterparts regarding non-HDL cholesterol and systolic blood pressure.
Researchers reviewed 110 health surveys involving almost 1 million participants aged 20 to 79. The data spans over three decades, providing a comprehensive look at how modern medicine has altered long-term health trajectories for those living with obesity.
Does This Mean Obesity No Longer Poses Health Risks?
Medical experts warn that while these findings are a success for cardiovascular management, they do not indicate that obesity is without further health consequences. Prof Edward Gregg, part of the research team at Imperial College London, emphasized that the findings do not suggest obesity is harmless, noting that it continues to increase the risk of other outcomes.
Prof Bryan Williams, the chief scientific and medical officer at the British Heart Foundation, added that while the results highlight the effectiveness of modern treatments, the “bigger picture” remains critical. He noted that obesity continues to elevate the risk of diabetes, kidney disease, and some cancers, regardless of improvements in cholesterol or blood pressure levels.
What Is the Outlook for Younger Adults?
The study highlights a significant divide between age groups. While the gap in cardiovascular health markers has closed for those over 40, adults under 40 living with obesity still exhibit higher levels of bad cholesterol and elevated blood pressure compared to those with a normal BMI.
Yse d’Ailhaud de Brisis, from Imperial College London, suggested that early lifestyle interventions and screenings are essential for this younger cohort. She noted that when appropriate, medical intervention should be considered for younger individuals to prevent the long-term cardiovascular complications associated with obesity.
The Role of Weight-Loss Medications
The findings provide a baseline for understanding the health of populations likely to be prescribed weight-loss medications, which have rapidly increased in popularity. Researchers argue that it is vital not to “lose sight” of the findings as an increasing number of people use weight-loss medications. Understanding how these drugs interact with existing treatments for blood pressure and cholesterol will be a priority for healthcare systems moving forward.
Frequently Asked Questions
- Are people with obesity now as healthy as those with a normal BMI?
Not necessarily. While their blood pressure and cholesterol levels may be indistinguishable due to medication, obesity still carries risks for diabetes, kidney disease, and some cancers, according to the British Heart Foundation. - Why do older adults see better results than younger ones?
The study found that unhealthy cholesterol levels and blood pressure “declined over time”, especially among those aged 40 and over, leading to a convergence of these risk factors. - What is the main takeaway for clinicians?
Experts suggest that while treating cardiovascular markers is successful, clinicians must remain vigilant about the holistic health impacts of obesity, particularly in patients under 40.
Have questions about how these trends might affect your health? Consult with your primary care provider to discuss your specific cardiovascular risk profile. For more updates on public health research, subscribe to our weekly newsletter.
