How are salt, sugar, coffee, chocolate, alcohol, tobacco, marijuana, opioids, and cocaine alike? We know they offer little or no nutritional benefit, can be addictive, and may cause health problems. They also provide pleasure to the brain. But another similarity is often overlooked: these substances-which author John L. Graham refers to collectively as spices-are all pushed upon us by companies and producers that relentlessly market them. Given the...
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