Coffee and Metabolism

Caffeine can affect alertness and energy expenditure, but “affects metabolism” is not the same claim as “causes substantial long-term weight loss.”

When evaluating a coffee-based weight-loss pitch, look for evidence tied to the actual outcome being promised. Short-term physiological changes should not be presented as proof of large or effortless fat loss.

Questions worth asking

Was the finished formula studied? Was the study in humans? Was it randomized and controlled? How large was the effect? How long did it last? Were diet and activity controlled?

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