The government actuary broke down average lifespans based on socio-economic background for men and women, at birth, at age 25, 65 and 85. At birth, a boy born in the most socially-disadvantaged 10 per cent of the population can expect an average lifespan of 75.9 years. But one born in the most socially-advantaged 10 per cent of population can look forward to 84.6 years. At age 25, the gap is even wider. The most socially-disadvantaged men can expect another 51.6 years of life while among the top 10 per cent, young men can expect another 60.1 years.