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Short Summary
Main recommendation: Coffee and tea are both generally linked to health benefits, but coffee has stronger evidence for cancer prevention (especially liver cancer), while tea suits people who want calmer energy or who are sensitive to caffeine. Both are associated with lower heart disease and dementia risk in moderate amounts, with the outcome depending largely on preparation and additives.
Key Points
- Caffeine content varies widely: ground coffee about 100 mg per cup, instant coffee about 60 mg, black tea about 50 mg, green tea about 28 mg, matcha about 70 mg, yerba mate up to 85 mg, and herbal teas like chamomile none.
- Tea contains L-theanine, an amino acid that can influence the nervous system, giving smoother, calmer energy with less of a crash than coffee.
- Coffee contains chlorogenic acids (antioxidant activity), while tea is high in catechins (anti-inflammatory and some metabolic benefits).
- Coffee shows more consistent links to lower risk of liver, endometrial, and possibly colorectal cancer; tea's cancer evidence is unclear, with a possible link only to lower oral cancer risk.
- Both drinks are linked to lower metabolic syndrome risk and reduced cognitive impairment and dementia, generally at about 2 to 4 cups a day.
Details Worth Noting
- Concrete instructions:
- If your cholesterol runs high, avoid unfiltered coffee, since it contains diterpenes that can raise cholesterol. Use a paper filter or choose instant coffee, because both methods remove diterpenes.
- Limit black tea to roughly two or three cups a day; the benefit seems to disappear above four cups. Green tea intake shows a continuing benefit trend as intake increases.
- Let hot drinks cool before sipping. Drinks at 65 °C (149 °F) or hotter are linked to higher esophageal cancer risk.
- If you have low iron, do not drink coffee or tea close to meals. Keep them at least one hour before or after meals, since both inhibit non-heme iron absorption, with tea having the stronger effect.
- Pregnant people should avoid large doses of caffeine from any source.
- Choose tea over coffee if you are caffeine sensitive, get anxiety, tremors, or jitteriness, have insomnia or sleep issues, or want a calm feeling.
- Most heart-health benefits appear in the range of about 2 to 5 cups a day for both drinks.
- Additives such as cream, sugar, and creamers are often a bigger health issue than the drink itself.
- The video says the evidence for coffee and cancer is stronger and points viewers to a separate video for more detail.
Bottom Line
Neither drink is harmful in moderate amounts. Coffee suits people seeking alertness and cancer-related benefits, while tea suits those wanting calmer energy, less caffeine, or better sleep, and preparation and additives matter as much as the drink itself.
