Introduction In the aging societies of the United States, obesity has undergone a dramatic increase in recent years. People attribute this to many factors ranging from the excessive intake of energy food through lack of proper physical exercises to genetic susceptibility. They further estimate that approximately one-third of adults in the United States are obese, 15 million of which comprise of the older adults aged 51 years and above (Fontaine, Cutler and Allison 189). Obesity is a “medical condition characterized by excess accumulation of body fats to the level that the affected individual experiences diverse health effects resulting to a number of health problems and other chronic conditions” (Flegal, Carroll and Curtin 237). Professional doctors determine obesity based on the ’Body-mass index (MBI), a measurement that compares body weight with body height. Therefore, a person can be overweight and not obese. An obese person has increased likelihood of acquiring various diseases, which include heart diseases, diabetes type 2, specific types of osteoarthritis and cancer, sleep apnea. The prevalence of obesity in an aging society is on an upward trend. For instance, According to Fontaine, Cutler and Allison , between 1999 and 2002,the percentage of obese adults aged from 65 to 74 years increased from 18% to approximately 36%(187). Obesity in the aging society has become an epidemic due to diverse detrimental effects related to it. This follows because a big proportion of obese older people have obesity-related chronic illnesses or detrimental degenerative conditions like cardiovascular diseases, arthritis, and cancer. This paper addresses the issues surrounding obesity epidemic. It, further, shows its respective influence on the human population as people age. Implications of obesity in an aging society on entitlement programs Obesity among older or senior citizens in the United States has far-reaching implications on various entitlement programs specifically social security, and Medicare. The fiscal malaise experienced by the entitlements programs mainly result from increased rates of obesity amongst senior citizens. Policy makers often debate on the mitigation measures to reduce entitlements costs, as they have profound effects on the nation’s economic growth. The United States’ Social security, the world’s largest program in social insurance program, faces diverse challenges as the number of beneficiaries increase. The social security has diverse programs such as unemployment benefits, Medicare- a health insurance for the disabled and old, programs in medical assistance known as Medicaid program, disability insurance, assistance for poor families, patient protection programs, and affordable care programs. These programs require a lot of money to implement. However, it benefits millions of citizens. The number of senior citizens requiring health insurance from social security has increased resulting to increased expenditure. From recent studies, it is evident that the increase of obese people in the aging society is tantamount to increased expenditure in social security. Disability pensions that are attributable to increased obesity cost the US economy billions of dollars every year. In the realm of the United States’ health care, the aging society is drawing much attention based on the evident increase of obesity prevalence among older citizens that has resulted to an increase in many chro