Tornado Alley (PROG)

[DesertDrifter]

This seems to suggest

not the words empirical science uses.

Inhaling any kind of smoke can do damage, it seems, intuitively. Lung cancer can be a result, but the data does not show that cannabis smoke leads to lung cancer. No appreciable difference from the control. If someone had COPD and wanted the beneficial effects of various cannabinoids, edibles are certainly readily available.

If you do not believe the science, then not much to discuss. The NIH usually errs on the side of caution, but they didn't say cannabis smoke is necessarily harmful.