How much caffeine do Americans get, and from which drinks?
About 165 mg a day on average, and coffee is the main source at every age. In this national survey, 85% of people aged 2 and older had at least one caffeinated drink a day. Intake peaked at 226 mg a day in adults aged 50 to 64, and the top 10% of consumers took in 380 mg a day or more. Soda and tea made up a bigger share of caffeine in people under 18.
Dr. Kumar’s Take
National beverage data show that coffee is the dominant source of caffeine in the U.S. These data provide context for interpreting population-level caffeine exposure and related health outcomes.
Key Takeaways
- 85% of Americans aged 2 and older have at least one caffeinated drink a day.
- Coffee is the primary source of caffeine in every age group. Soda and tea supply a bigger share in people under 18.
- Energy drinks are uncommon: no more than 10% of people in any age group drink them.
- Average intake is 165 mg/day for all ages combined, peaking at 226 mg/day in adults aged 50 to 64. Both are below the 400 mg/day that EFSA considers safe for healthy adults.
Actionable Tip
Most adults consume caffeine well within safety limits. Energy drinks contribute a small but concentrated portion and should be monitored for total dose.
Study Summary
This survey analysis quantified caffeine intake and beverage contribution patterns using 7-day beverage diaries from a nationally representative sample of 37,602 U.S. consumers aged 2 and older.
Study Design / Methods
- Type: Cross-sectional population beverage survey
- Data Source: Kantar Worldpanel Beverage Consumption Panel (7-day diaries, 37,602 consumers)
- Measures: Mean intake by beverage type and age
Results
- 85% of the U.S. population consumes at least one caffeinated beverage per day.
- Coffee was the primary source of caffeine in every age group.
- Intake varied by age, peaking at 226 mg/day in adults aged 50 to 64.
- The 90th percentile intake was 380 mg/day for all ages combined.
Mechanism / Biological Rationale
Understanding population intake patterns helps frame exposure levels in relation to physiological thresholds for safety and efficacy.
Strengths & Limitations
- Strengths: Large national dataset, representative sampling.
- Limitations: Self-reported intake, variability in beverage caffeine content.
Related Studies and Research
FAQ
What’s the average caffeine intake for adults in the U.S.?
About 165 mg/day across all ages, and 226 mg/day in adults aged 50 to 64, mainly from coffee.
How much comes from energy drinks?
Not much at the population level. In this survey, no more than 10% of people in any age group drank energy drinks, and coffee was the main caffeine source at every age.
Are intake levels increasing over time?
This survey measured intake at one point in time, so it does not show a trend. It gives a snapshot: 85% of Americans have at least one caffeinated drink a day, averaging 165 mg.
Conclusion:
U.S. caffeine intake is dominated by coffee. Average intake of 165 mg a day is well below established safety thresholds, supporting population-level tolerability.
