Let’s see an article from BBC first:
Retirement has a detrimental impact on mental and physical health, a new study has found.The study, published by the Institute of Economic Affairs (IEA), a think tank, found that retirement results in a "drastic decline in health" in the medium and long term.The IEA said the study suggests people should work for longer for health as well as economic reasons.The government already plans to raise the state pension age.The study, which was published in conjunction with the Age Endeavour Fellowship, a charity, compared retired people with those who had continued working past retirement age, and took into account possible confounding factors.Philip Booth, programme director at the IEA, said the government should go further to deregulate labour markets and allow people to work for longer.
In fact,I think this statement is only one-sided.Yeah,maybe to mental worker it is indeed so.There also a research found that who retired before the age of 60 express more boredom than those who retired later may be a support.However,there are lots of manual worker.They don't have the ability to do heavy physical labor as they grew older. For those weak constitution, early retirement or change a light work maybe a better choice.Money is undeniable important,but health is more important.
As to retirement affects mental and physical health,I think there are some other ways to remedy.For example ,they can learn to play chess,read books, take part in leisure activities to keep mental health.They can also take a walk for physical health.About the effects of leisure activities for the retiree,there is a specialized research.