The ageing of the population is one of the most significant phenomena of the 21st century which has important and far-reaching consequences for all sectors of society.The decrease in fertility, the increase in life expectancy for all age groups and the reduction in mortality rates are among the factors that, more than others, push our population towards a gradual aging of the population. The Aging population is a problem that affects all regions and all countries with different levels of development. Its progression is faster in the developing countries, even among those with a high number of Young people.According to UNFPA (United Nation Population Fund) currently among the 15 countries that have over 10 million elderly, seven of them are developing countries. Ageing is a triumph of development. A ever-increasing longevity is one of humanity’s great achievements. You live longer thanks to better nutrition, hygiene, progress in the field of medicine, medical care, education and economic well-being. Life expectancy at birth is currently over 80 years in 33 countries; five years ago, the countries that had achieved this goal were only 19. Currently, only Japan has a population elderly more than 30% of the total; it is believed that by 2050, 64 countries they will reach Japan on these percentages. The Nationa Statistics In 2016 stated that the population of the UK was 65.6 million. From the statistics is clear that the population in the UK is getting older with 18% aged 65 and over and 2.4% aged 85 and over. In 2016 there were 285 people aged 65 and over for every 1,000 people aged 16 to 64 years which is the traditional working age. (Malissa Randal, 21 July 2017)These statistics show that there are less young people than few years ago, because less children were born in the last few years. Instead the elderly are increasing, because people today live longer for many reasons: such as healthier lifestyle, live in cleaner houses and have more medicine to treat themselves than many years ago. Today, women live on average 82.2 years and men 79.1 according to Office of the National Statistics. From the graph 1.1 and 1.2 is evident that the life expentacy of male and female has increased.The family has changed: now people tend to get married less or they just get married in a later age or they simply live together without getting married. Many women with families also work outside the home and men help their children grow up: it is therefore said that roles in the family have changed and are less rigid than many years ago, and that the women can do things that only men did before and vice versa.