> Promoting smoking cessation may be a good way to preserve cognitive health at the population level, irrespective of diabetes and hypertension status, the rese

> Promoting smoking cessation may be a good way to preserve cognitive health at the population level, irrespective of diabetes and hypertension status, the researchers concluded. Emphasis mine. They don't appear to claim anything definitive. But given this new study, and others that claim causal links with smoking leading to atherosclerosis, etc., it's quite plausible. Yet they don't go too far, and still do the right thing and say may.