Coffee antioxidants and extraction: what the evidence actually says
Coffee contains naturally occurring compounds including polyphenols. Their measured levels can change with bean variety, roast, grind, water, temperature, time and other brewing variables.
Research comparing hot and cold brewing has found differences in extraction chemistry. That is useful for understanding flavor and composition, but it does not establish that room-temperature coffee, a three-day freshness rule, or a five-day window activates the immune system.
What about Harvard research?
Harvard T.H. Chan School of Public Health discusses coffee as a complex beverage studied in relation to long-term health outcomes. It does not provide evidence that the Bobo Wellness product, or a particular drinking time, has been clinically proven to activate immunity.
How we describe our coffee
For Bobo Wellness, room-temperature extraction and the “3-Day Fresh” positioning describe our preparation and freshness choices. They should be understood as product and flavor decisions—not medical claims.
Caffeine still matters
Caffeine tolerance differs by person. The U.S. FDA notes that for most healthy adults, 400 mg of caffeine per day is an amount not generally associated with negative effects, while sensitivity and individual circumstances vary. Pregnancy, medications and some health conditions can change what is appropriate.
