1. Chapter 2: The Health Market The Next 4 Billion Four billion low-income consumers, a majority of the world’s population, constitute the base of the economic pyramid (BOP). New empirical measures of their aggregate purchasing power and their behavior as consumers suggest significant opportunities for market-based approaches to: better meet their needs, increase their productivity and incomes, and empower their entry into the formal economy.

2. Chapter 2: The Health Market The Next 4 Billion The Health Market The Next 4 Billion: Market Size and Business Strategy at the Base of the Pyramid http://www.wri.org/thenext4billion

3. Chapter 2: The Health Market The Next 4 Billion