Smoking Leaves a Mark on Your DNA
Every cigarette changes your DNA methylation patterns. GrimAge captures this damage - and can show when it starts to heal.
DNAm Pack Years
GrimAge includes a component that directly estimates your lifetime smoking exposure from DNA methylation - your biological smoking signature.
Inflammation Markers
Smoking elevates CRP and other inflammatory proteins that GrimAge measures. Quitting reduces these markers within months.
Partial Reversal
While some methylation changes persist, many begin to normalize after quitting. Track your recovery with serial testing.
Why Track Biological Age When Quitting?
Quitting smoking is hard. Seeing concrete biological improvement can provide the motivation to stay quit when cravings hit.
Visible Progress
Watch your biological age drop as your body heals - concrete proof that quitting works
Milestone Rewards
Test at 3, 6, and 12 months smoke-free to celebrate your biological rejuvenation
Relapse Deterrent
Knowing a relapse will show up in your biological age helps resist "just one cigarette"
Share Your Success
Show family and friends the biological proof that you're getting healthier
Key Research Papers
Your Quit Journey, Measured
Track your biological age at key milestones
Baseline
Your starting point - capture the damage before you quit
3 Months
Inflammation markers begin dropping, first improvements visible
6 Months
Significant biological improvement, major milestone
1 Year
Celebrate your biological rejuvenation - you've earned those years back
Ready to Watch Your Body Heal?
Join our study and get the biological proof that quitting works. See your age drop as you stay smoke-free.
Study Eligibility
- Current smokers planning to quit OR recently quit (within 3 months)
- Smoking history of 5+ pack-years
- Willing to complete blood draws at baseline, 3, 6, and 12 months
- Committed to quit attempt (any method welcome)
Successful quitters receive discounted follow-up testing
Working With Smoking Cessation Organizations
Partnering with cessation programs to provide biological motivation
Frequently Asked Questions
How much can my biological age improve by quitting?
Heavy smokers often see GrimAge improvements of 2-5 years within the first year of quitting. The exact improvement depends on how much you smoked and for how long. Some methylation changes reverse quickly; others improve gradually over years.
Will the damage ever fully reverse?
Research shows that some smoking-related methylation changes persist for decades, while others normalize within months. You may not return to never-smoker levels, but significant improvement is typical. The key is that quitting stops adding new damage.
What if I relapse during the study?
Relapses are common in quit attempts - that's reality. We encourage you to continue with scheduled tests regardless. The data on relapse effects is actually valuable, and seeing the biological impact may help motivate your next quit attempt.
Does it matter how I quit (cold turkey, patches, medications)?
Any quit method is welcome in the study. What matters for your biological age is that you stop inhaling tobacco smoke. Use whatever cessation aids help you succeed - the biological benefits are the same.
What about vaping/e-cigarettes?
If you switch completely from smoking to vaping, you'll likely see some biological improvement since you're eliminating combustion products. However, we're most interested in participants who quit nicotine entirely. Vapers are welcome to participate, and we'll track their outcomes separately.