What would happen if human life expectancy doubled?

AI - 

Doubling human life expectancy would profoundly impact almost every aspect of society. Here are a few possible consequences:

1. Population Growth: A longer lifespan would likely lead to a population explosion unless birth rates dramatically declined. Earth's resources might be strained further, leading to potential food, water, and energy shortages.

2. Healthcare Strain: An aging population would demand extended healthcare. Diseases of aging, such as Alzheimer's or arthritis, could become more widespread, requiring advances in medical technology and caregiving.

3. Workforce and Retirement: The retirement age would likely shift later, causing job stagnation for younger generations. It might also create new career paths as people seek to reinvent themselves multiple times over longer lives.