The iQuit guide library
Quit smoking guides, science and motivation
Practical, research-backed articles for every stage of quitting, from choosing a method and planning your quit day to handling cravings and staying smoke-free.
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Nicotine Lozenge 2mg vs 4mg: Which Strength to Buy
2mg or 4mg nicotine lozenge? The FDA label’s 30-minute rule, mini vs regular sizes, the 12-week schedule, and daily limits, sourced from…
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How Many Ex-Smokers Are There? Former Smoker Data 2026
How many ex smokers are there? Former smokers outnumber smokers in the US, UK, Canada, Australia and Ireland. Quit ratios, ages and…
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How to Quit Smoking When Your Partner Still Smokes
Living with a smoker doesn’t mean you can’t quit. Here’s the research on partner smoking and relapse, and a real plan for…
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Smoking and Crohn’s Disease: Why Quitting Matters
Smoking and Crohn’s disease: how smoking drives flares, surgery and recurrence, how fast quitting helps, the colitis paradox and a safe quit…
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Popcorn Lung and Vaping: What the Evidence Actually Shows
Does vaping cause popcorn lung? Here is what NIOSH, CDC and 2026 research actually show about diacetyl, EVALI, and real lung-injury case…
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Smoking on Birth Control: Clot Risk and Safer Options
Smoking on birth control raises clot, heart attack and stroke risk. See the age 35 rule, FDA and NHS guidance, safer methods…
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Nicotine Gum Side Effects: What Is Normal and What Is Not
Learn which nicotine gum side effects (hiccups, jaw ache, nausea) are normal, why chew-and-park stops most of them, and when to call…
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How to Quit When You Only Smoke a Few Cigarettes a Day
How to quit smoking if you only smoke a few a day: map your fixed cigarettes, check if low-dose NRT fits, cut…
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How Much Money Do You Save Quitting Vaping? Real Math
How much money do you save quitting vaping? Real disposable, pod and refillable prices, a weekly-to-5-year cost ladder, and how to track…
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How Long Does It Take to Get Addicted to Nicotine?
How long does it take to get addicted to nicotine? Studies show signs can start within days or weeks of occasional smoking.…
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Smoking and Male Fertility: Sperm Recovery After Quitting
Smoking lowers sperm count, motility, and shape, and raises DNA fragmentation. See the evidence and how soon after quitting sperm quality starts…
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25 Hobbies to Replace Smoking, Matched to Why You Smoked
Hobbies to replace smoking, matched to the job cigarettes did for you: 25 ideas for breaks, busy hands, stress, social time and…
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