Why some obese people don’t get metabolic diseases

A new research has revealed that reduced levels of inflammation may explain how some obese people are able to remain metabolically healthy.

Some people, who are obese, do not develop high blood pressure and unfavorable cholesterol profiles – factors that increase the risk of metabolic diseases. This phenomenon is described as metabolically healthy obesity.

In the study by Catherine Phillips, BSc, PhD, of University College Cork in Ireland, researchers found that metabolically healthy people – both obese and non-obese – had lower levels of a range of inflammatory markers.

“Regardless of their body mass index, people with favorable inflammatory profiles also tended to have healthy metabolic profiles,” Phillips said.

The cross-sectional study was conducted between 2010 and 2011 at a large primary care center in Mitchelstown, County Cork, Ireland. Researchers analyzed data from 2,040 participants in the Cork and Kerry Diabetes and Heart Disease Study (Phase II).

Participants, who were between the ages of 50 and 69, completed lifestyle questionnaires, physical and clinical assessments, and underwent blood testing so their body mass index (BMI), metabolic profiles and inflammatory markers could be determined.

Researchers found that people who were metabolically healthy had reduced counts of white blood cells and acute-phase response proteins, which proliferate when inflammation occurs. Metabolically healthy people also had higher levels of adiponectin, a hormone that has an anti-inflammatory effect, compared to their metabolically unhealthy counterparts. Researchers found this inflammatory profile in both obese and lean people who were metabolically healthy.

The study was published in The Journal of Clinical Endocrinology and Metabolism.