E-cigarettes provide an alternative to nicotine delivery through vapor rather than smoke. While they may be less harmful than conventional cigarettes, there are still health risks and unknown long-term effects. The document discusses both sides of the debate around e-cigarettes. Some view them as a harm reduction tool that can help smokers quit, while others are concerned they could renormalize smoking behaviors and expose users to carcinogens. Long-term studies are still needed to fully understand the safety profile of e-cigarettes and their impacts on public health.