NYC's ban on smoking in bars, initially met with widespread criticism, became a popular and accepted norm. This shows that effective public health leadership sometimes involves implementing policies that are unpopular at first but create long-term societal benefits.

The human brain is wired to pay more attention to potential threats or mistakes. Leveraging this, hooks framed with negative words like "don't," "stop," or "avoid" are more likely to stop a scroll and maintain viewer curiosity than hooks with positive framing like "do this" or "try this."

Labeling a person or group as 'disgusting' is an effective political tactic because it's an emotional attack, not a logical one. While one can counter claims of incompetence with evidence, an accusation of disgust is nearly impossible to refute rationally, making the target defenseless.

The Nazi party strategically used disgusting imagery, describing Jewish people as dirty, greasy, or slimy. This rhetorical strategy was designed to elicit visceral disgust, thereby dehumanizing an entire population and motivating social avoidance, ostracism, and ultimately, violence.

PolyGone found that while "climate change" can be a polarizing topic, focusing on the direct human health risks of microplastics (e.g., depositing in the brain and lungs) created universal concern. This messaging bypasses political divisions and resonates across all demographics.

People remain disgusted by an object even when they intellectually know it's safe, such as a sterilized cockroach dipped in a drink. This demonstrates that disgust operates on a 'magical' or symbolic level, bypassing our rational faculties and making it a powerful, irrational force.

Stating data like '30 grams of saturated fat' is ineffective because it lacks context. To create impact, translate abstract numbers into concrete, relatable comparisons. The message became powerful when reframed as 'more fat than a breakfast, lunch, and dinner of greasy foods combined,' which prompted public outrage and industry change.

While successful in reducing smoking, the aggressive demonization of smoking in public health campaigns created a lasting stigma. As a result, lung cancer patients often face blame and receive less empathy compared to patients with other cancers like breast or colon cancer.

Unlike other emotions, disgust spreads through contamination in one direction. A single cockroach can render an entire platter of food inedible, but pouring a gallon of honey on the cockroach won't make it less disgusting. This principle highlights the powerful, irreversible nature of disgust.