Over 15 years ago, a strange counter-intuitive bit of data was identified in patients undergoing hemodialysis for chronic kidney disease. Across several studies, overweight or mildly obese patients were displaying greater survival rates than those with healthy weights. The phenomenon was dubbed the “obesity paradox” and for well over a decade scientists have debated what could be causing it. Several new studies presented recently at the European Congress on Obesity have added further weight to the hypothesis of an obesity paradox, finding several strange correlations between obesity and survival rates across a variety of conditions.
The first study looked generally at patients admitted to hospital for an infectious disease. Tracking more that 18,000 patients admitted to hospitals in Denmark over a four-year period, the study found that within 90 days of discharge those patients of a normal weight displayed a significantly higher chance of dying when compared to both overweight and obese patients.
Two more studies presented at the conference examined mortality rates from patients admitted to hospitals for pneumonia and sepsis. Both studies examined large banks of data tracking admissions from over 1,000 US hospitals.
The pneumonia study, which included data from 1,690,760 hospitalizations, found that obese and overweight patients were between 20 and 30 percent less likely to die from the condition than those of normal weight. The sepsis study impressively gathered data from 3.7 million hospital admissions and found obese and overweight patients were around 20 percent more likely to survive following admission than patients of normal weight.
(For more information visit: https://newatlas.com/obesity-paradox-overweight-survival-sepsis-pnemonia/)