The ability of some individuals to find pleasure in tobacco, cannabis, and certain other plant-based substances could have evolved in response to or as a side effect of:

Question

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The ability to find pleasure in tobacco, cannabis, and certain other plant-based substances could have evolved in response to exposure to helminths (parasitic worms). Some studies have suggested that certain chemicals found in these substances may have anti-parasitic properties, and individuals who were more attracted to these substances may have had a better chance of surviving parasitic infections.

The Ability of Some Individuals to Find Pleasure in Tobacco