Science & Health
Understand what's happening in your body — the science behind addiction, withdrawal, and recovery.
Guide
What Does Nicotine Do to Your Body?
From your first puff to long-term effects — the complete picture of nicotine's impact.
Guide
Nicotine Withdrawal Day by Day
A detailed timeline of what to expect each day for the first 30 days after quitting.
Guide
Is Vaping Worse Than Smoking? What Science Says
Cutting through the noise with actual research on comparative health risks.
Guide
How Long Does Nicotine Stay in Your System?
Blood, urine, saliva, and hair — how long nicotine and cotinine are detectable.
Guide
Effects of Quitting Nicotine: Full Timeline
What happens to your body from 20 minutes to 15 years after your last hit.