Vaping might look harmless—but the effects run deep. From lung irritation and reduced immunity to increased heart rate and nicotine dependence, vaping triggers a range of changes inside the body. Over time, it can impact breathing, brain development (especially in teens), and even pave the way for long-term health issues. Hello Doctor brings the right guidance home. Whether you're trying to quit or just understand the risks better, your doctor comes home with answers that matter to your health a