The Claim
Individuals who ceased smoking for more than 20 years have a risk of developing end-stage age-related macular degeneration that is not statistically different from the risk in individuals who have never smoked.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People who stopped smoking more than 20 years ago have the same risk of developing advanced age-related macular degeneration as people who never smoked.
See the scientific wording
Individuals who stopped smoking for more than 20 years have a risk of developing end-stage age-related macular degeneration comparable to that of lifelong non-smokers, suggesting that long-term smoking cessation may eliminate excess AMD risk associated with prior tobacco use.
Smoking releases harmful chemicals that damage the layer of cells behind the retina, causing waste to build up and weaken the barrier beneath the retina. This damage triggers abnormal blood vessel growth or cell death in the retina, leading to severe vision loss. After quitting for over 20 years, the body repairs this damage, and the risk returns to the level of people who never smoked.
What the research says
1 studyPeople who quit smoking more than 20 years ago have about the same risk of severe vision loss from AMD as people who never smoked, according to this study. Quitting for a long time seems to erase the extra risk smoking once caused.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.