For thousands of years, tobacco use has had significant cultural and geopolitical impacts across the globe
In the lung, nicotine is readily and rapidly absorbed across the respiratory epithelium, where a pH of 7.4, the extensive alveolar surface, and the extensive capillary system promote absorption
Several studies provided information on the effect of confounder adjustment (Table 4)
That doesnt mean the study is garbage (nor that peer-reviewed studies are always completely credible)
It can infest an unusually wide menu: flour, spices, dried herbs, pet food, birdseed, cacao, pasta, and even medicinal drugs-hence "drugstore beetle." Larvae often pupate in a silken cocoon reinforced with food dust/fragments, so the "case" looks like the product itself