Vaping is sometimes linked to lower body weight, but it is not a safe or reliable way to lose weight. Some studies show that people who vape tend to have a slightly lower body mass index, but this does not mean vaping causes healthy or lasting weight loss. The effect, when seen, is small and inconsistent.
Nicotine plays a role here. It can reduce appetite for a short time and slightly increase how many calories the body burns at rest. However, research shows that vaping does not consistently lead to real or meaningful weight loss, especially compared with normal changes related to eating habits, physical activity, or smoking status.
Some people notice appetite changes when they start using nicotine, but these effects often fade. When nicotine use stops, appetite can increase, which may lead to weight gain. Vaping can also affect metabolism and blood sugar in ways that are not fully understood and may carry health risks. Read more about nicotine withdrawal symptoms that some people experience.
Vaping should not be used for weight control. It can lead to nicotine dependence and other health problems. For concerns about weight or metabolism, it is safer to talk with a primary care doctor or an endocrinologist and focus on proven strategies like nutrition, physical activity, and medical guidance rather than self-medicating with nicotine.