The study was carried out by Harriet Young and Prof Emily Grundy at the Centre for Population Studies at the London School of Hygiene and Tropical Medicine.
"These findings have important policy implications for whether long-term care services for older people living alone should be prioritised, or if services should be directed at unpaid family carers, the Telegraph quoted Prof Grundy, as saying.
"The research also highlights differences within Europe. Older people in Scandinavia were happier than in other regions of Europe. In Scandinavia there are generous welfare systems.
In England and Wales older women living alone reported better self-rated health than married women of the same age, even though the married had lower death rates over the next three years.
"One reason might be that some of the married older women may have caring responsibilities for their spouses, which might affect their self-rated health, she added.
Commenting upon men, she said, Those living with relatives other than their wife will in many cases be doing so because of health problems which would raise the chance of being depressed or unhappy."
The study was based on findings from the Office for National Statistics Longitudinal Study on England and Wales, the English Longitudinal Study of Ageing on England, and the European Social Survey with data from 19 European Countries.
Source-ANI
LIN/P