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  1. What Nicotine Is and How It Affects Your Body - Verywell Health

    Dec 4, 2025 · Nicotine, a highly addictive stimulant found primarily in tobacco plants, plays a significant role in smoking addiction due to its effects on the brain's pleasure and reward systems.

  2. Nicotine: Facts, effects, and dependency - Medical News Today

    Jul 1, 2024 · Nicotine is a highly addictive substance found in tobacco products and can be the reason many people consume tobacco. It may cause side effects such as dizziness, racing heartbeat, and …

  3. The Dangers of America's Nicotine Boom - Men's Health

    Jan 13, 2026 · Nicotine constricts blood vessels, raises heart rate and blood pressure, and puts extra strain on the cardiovascular system, says Tory Spindle, PhD, an associate professor at Johns …

  4. The Hidden Healing Power of Nicotine - Psychology Today

    Jun 8, 2025 · What if nicotine—which we associate with addiction—actually holds the key to treating depression, ADHD, Alzheimer's, & Parkinson's? Discover the surprising medical revolution.

  5. Nicotine benefits, dosage, and side effects - Examine

    Aug 28, 2025 · Nicotine is the main stimulatory compound found in cigarettes and is now sold in vaporizers and patches in isolation. It works on the acetylcholine system, and is implicated in …

  6. Nicotine dependence - Symptoms and causes - Mayo Clinic

    Jun 14, 2025 · Nicotine is the chemical in tobacco that keeps you smoking tobacco. Nicotine reaches the brain within seconds of taking a puff. In the brain, nicotine increases the release of brain chemicals …

  7. Nicotine - American Lung Association

    Nicotine is the addictive drug in tobacco products. Cigarettes, cigars, smokeless tobacco and nearly all e-cigarettes contain nicotine.

  8. Nicotine (NicoDerm, Nicorette, and others): Uses, Side Effects

    May 12, 2025 · Overview: Nicotine is used to help reduce withdrawal symptoms from quitting smoking. Common side effects vary based on the form of nicotine that you use.

  9. Could nicotine help you live longer? Biohackers think so

    4 days ago · How are biohackers using nicotine? Dave Asprey, the man widely credited with launching the biohacking movement, is one of the most prominent figures endorsing so-called longevity nicotine.

  10. Nicotine - Simple English Wikipedia, the free encyclopedia

    Nicotine is a chemical in tobacco, which is used in cigarettes, cigars, pipes tobacco, chewing tobacco, some vaping liquids and some e-cigarette products. Nicotine is an addictive substance with stimulant …