Muhammad Yunus pioneered microfinance in the 1970s by making small loans to impoverished villagers in Bangladesh. Microfinance has since spread globally and helped many people escape poverty by providing financial services to the poor. While microfinance has been successful in some areas, evidence also shows its limitations. It works best to support existing small businesses rather than as a cure for poverty on its own. Some borrowers take on too much debt, and the poorest may be better served first through savings programs rather than loans. Effective microfinance requires balancing social and financial sustainability.