One of the reasons for the growth of healthcare costs to employers is the rise in obesity-related illnesses brought about by lack of physical activity, another is the effect of an ageing workforce and the associated increase in chronic health conditions driving higher health care utilization. In 2000 the health costs of overweight and obesity in the US were estimated at $117 billion.[13] Each year obesity contributes to an estimated 112,000 preventable deaths.[14] An East Carolina University study of individuals aged 15 and older without physical limitations found that the average annual direct medical costs were $1,019 for those who are regularly physically active and $1,349 for those who reported being inactive. Being overweight increases yearly per person health care costs by $125, while obesity increases costs by $395.[13] A survey of North Carolina Department of Health and Human Services employees found that approximately 70 cents of every healthcare dollar was spent to treat employees who had one or more chronic conditions, two thirds of which can be attributed to three major lifestyle risk factors: physical inactivity, poor diet, and tobacco use.[15] Obese employees spend 77 percent more on medications than non-obese employees and 72 percent of those medical claims are for conditions that are preventable.[16]