Older people shouldn’t eat health food, they need all the preservatives they can get.

Orben’s line is a classic one-liner built on reversal: “preservatives,” usually criticized as unhealthy additives, are reimagined as something that might “preserve” an older person’s life. The joke plays on the double meaning of the word—chemical preservatives in processed food versus the idea of preservation as longevity. It also gently satirizes health-food culture and the moral seriousness that can surround dietary choices, suggesting that strict purity may be less important than pleasure, practicality, or simply laughing at the anxieties of aging. The humor depends on exaggeration rather than a literal claim about nutrition.