Retirement is one of life's major milestones, the researchers explain. However, studies have revealed conflicting evidence regarding the benefits and drawbacks linked to retirement.
Dr. Hugo Westerlund and team observed study participants for 15 years, including approximately 7 years before they retired, and about 7 years after - a total of nearly 190,000 observational years. The study involved 11,246 males and 2,858 females from a large French cohort study. They were studied from 1989 through 2007. This study is based on annual yearly measurements over a very long time, the authors write, making it much more meaningful than previous ones.
The majority of the participants were either middle class or higher. 89% of them were married. 72% of them retired at 53 and 57 (inclusive) years of age, the rest were retired by the time they had reached 64. 25% of them had experienced depressive symptoms during the twelve months leading up to their retirement. 7% (728) of them had been diagnosed with either a respiratory disease, heart disease, stroke or diabetes.
Single individuals and those in lower employment grades were more likely to suffer from physical tiredness, but not mental fatigue.
The researchers found that retirement is associated with a considerable drop in mental and physical fatigue rates. Depressive symptoms also went down, but less than mental and physical fatigue. Chronic disease rates did not drop after retirement. The authors note that chronic disease are more linked to age.
The authors wrote:
"If work is tiring for many older workers, the decrease in fatigue could simply reflect removal of the source of the problem ... furthermore, retirement may allow people more time to engage in stimulating and restorative activities, such as physical exercise."
"(our findings) indicate that fatigue may be an underlying reason for early exit from the labour market and decreased productivity, and redesign of work, healthcare interventions or both may be necessary to enable a larger proportion of older people to work in full health."
"(This study) is unique in that annual health measurements were carried out several years before and after retirement."
"It is too early to make definite claims about positive and negative benefits from retirement at a particular age."
Hugo Westerlund et al
BMJ 2010; 341:c6149 doi: 10.1136/bmj.c6149 (Published 23 November 2010)