Top 3 Preventable Causes of Death Include Being Overweight
Author: Oksana Aron, MD Source: Weight Loss NYC Sep 30, 2025Prevention is the best cure
A study published in PLoS Medicine led by the Harvard School of Public Health, in conjunction with the University of Toronto and the Institute for Health Metrics and Evaluation at the University of Washington, is the most comprehensive to date taking into consideration how diet, lifestyle and metabolic chronic disease contribute to mortality in the U.S.

The results found that many of these factors include dietary and lifestyle risk factors that are preventable. The number of deaths that occur in the U.S. annually are attributed to the following risk factors listed below -- all of which were considered premature or preventable:
Preventable Cause | Deaths |
---|---|
Smoking: | 467,000 |
High blood pressure: | 395,000 |
Overweight-obesity: | 216,000 |
Inadequate physical activity and inactivity: | 191,000 |
High blood sugar: | 190,000 |
High LDL cholesterol: | 113,000 |
High dietary salt: | 102,000 |
Low dietary omega-3 fatty acids: | 84,000 |
High dietary trans fatty acids: | 82,000 |
Alcohol use: | 64,000 |
Low intake of fruits and vegetables: | 58,000 |
Low dietary poly-unsaturated fatty acids: | 15,000 |
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The study was the first of its kind to look at a wide range of contributing risk factors, including diet, lifestyle, smoking, alcohol and metabolic factors of the U.S. population, and to figure how many deaths were a result of each risk factor.
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Source: PhysOrg, 04-28-2009Labels: high blood pressure, overweight, smoking, weight loss