The ageing of the population is one of the most significant phenomena of the 21st century. 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. 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 National 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. This is due to the fact that the idea of family has changed over time, now people tend to get married less often as they prefer to live together or they just get married in a later age. Birth rate decreased also due to the fact that same sex couple increased from the past and they are accepted and also became legally recognised in many countries. Instead the elderly are increasing, because people today live longer for many reasons: such as healthier lifestyle, live in better house and have a better healthcare to treat themselves than many years ago. The developmen of new technology and the discover of new way to treat deseas facilitated the ageig of the population in the UK. 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.