An extension of the smoking ban to communal areas of residential blocks and other outdoor spaces in Singapore in 2013 may have prevented up to 20,000 heart attacks among those aged 65+, suggests research published in the open access journal BMJ Global Health.
Not really a direct parallel considering you can't exactly grow your own tobacco. Tobacco also isn't sold for any other purpose, unlike barley.
Lol what? You %100 can grow your own tobacco. And there is a ton of research being done using nicotine for Alzheimer's and dementia.