The Contribution to Be Rich "can add nine healthy years to your life" first appeared in The London Economic.
Over 25,000 people over age 50 were analyzed and data revealed that rich people live healthier, disability-free lives, such as being able to cook and get out of bed on their own.
This wealth gap was found to be the biggest socioeconomic factor that affected people's healthy life expectancies, and was found in both countries studied.
Wealthy women in the study were expected to live 33 disability-free years, while poor women could only expect 23 to 24.6 healthy years.
Dr Paola Zaninotto (UCL Epidemiology and Health Care), lead author of the study, said: "While life expectancy is a useful indicator of health, the quality of life as we get older is also crucial".
Scientists from the U.S. and United Kingdom have proven that wealth increases life expectancy by 9 years.
"Our study makes a unique contribution to understanding the inequality in health expectations between England and the United States, where health systems are very different". Previous research also has shown that Americans are worse off in terms of health compared to the British.
Referencing other research showing an American disadvantage in health compared with the British, the study says that "since access to healthcare is not the only explanation for inequalities in health, cross-national comparisons of health expectancy can also help evaluating strategies adopted in different countries to help reducing health inequalities".
Analysis didn't show any significant difference between the health of those in the United States and in England.
However, for people struggling to amass that level of household wealth, last week Harvard University found that following five health habits by the age of 50 can add more than a decade of healthy life.
Echoing the study's conclusion, Zaninotto said that "our results suggest that policymakers in both England and the USA must make greater efforts into reducing health inequalities".
To help combat this problem, Zaninotto concluded, "In both countries, efforts in reducing health inequalities should target people from disadvantaged socioeconomic groups". Since those with a lower socioeconomic status are more likely to get sicker and die early, they are less likely to be shaping American politics; which is why we have a stereotype of right-leaning seniors, as the wealthy - and thus more likely to lean right - merely live longer.