Do smart people drink more coffee?

There's no scientific evidence to suggest that smart people drink more coffee.

Here's why this is a tricky question to answer:

* Correlation vs. Causation: Just because two things are linked doesn't mean one causes the other. It's possible that people who drink more coffee are simply more likely to be in environments where coffee is readily available (like universities or offices) or they might simply enjoy the taste.

* Individual Variation: Coffee's effects vary significantly from person to person due to genetics, tolerance, and other factors. Some people might experience increased alertness and focus from coffee, while others might feel jittery or anxious.

* Other Factors: Intelligence is influenced by a complex interplay of genetics, environment, and lifestyle choices. Coffee consumption is just one small factor.

What we do know:

* Caffeine can improve alertness and focus: This effect is temporary and can vary depending on the individual.

* Moderate coffee consumption is generally safe: The amount considered "moderate" varies, but most health organizations recommend up to 400mg of caffeine per day for adults.

In short:

There's no evidence that smart people drink more coffee, and coffee consumption alone is not a reliable indicator of intelligence. Focus on getting enough sleep, eating a healthy diet, and engaging in mental stimulation to support cognitive health.