[Is loneliness the future geriatric syndrome of the 21^st century?]

The aging of the world population is now an unquestionable fact. The World Health Organization (WHO) points out in its World Report on Aging and Health published in 2015 two main causes: the increase in life expectancy and the decrease in fertility rates. The United Nations (UN) announced that Spain will become the oldest country in the world in 2050, with 44% of citizens over 60 years of age and the median age of 55.2 years. Whether this event is interpreted optimistically or as a demographic problem will depend on the quality of the years of life gained.