Staying hydrated is essential for good health — but new research suggests that your morning coffee or afternoon tea may do more than just quench your thirst. A large study published in the British Journal of Nutrition has found that people who drink a balanced mix of coffee, tea, and water each day may have a significantly lower risk of dying from any cause.

Researchers analysed data from more than 1.8 lakh adults in the UK Biobank and followed them for 13 years. They found that participants who consumed around seven to eight drinks a day, including a healthy mix of coffee, tea, and water, had a 28% lower risk of death compared to those who drank fewer than four beverages a day.

Dr. Thomas M. Holland, physician-scientist at Rush Medical College, said the results were “both intuitive and intriguing.” “The most protective mix wasn’t just one beverage — it was a balance,” he explained. “A roughly 2:3 ratio of coffee to tea was linked to the lowest risk of death and major diseases like heart and digestive disorders.”

The findings highlight that hydration alone is not enough — the quality of fluids matters too. “Every cell in the body depends on water to function,” said Dr. Holland. “But coffee and tea bring extra benefits through plant compounds that reduce inflammation and support heart health.”

What Makes Coffee and Tea Special?

Both beverages are packed with bioactive compounds that promote health. Coffee contains flavonoids and chlorogenic acids that improve insulin sensitivity and reduce inflammation, while tea offers catechins that protect blood vessels and may lower the risk of cardiovascular diseases.

Previous studies have also shown that moderate coffee consumption — up to four cups a day — can help prevent metabolic disorders like obesity and type 2 diabetes and even reduce cancer risk. Similarly, regular tea drinking has been linked with heart protection and anti-aging effects.

Moderation Is Key

However, experts warn against overdoing caffeine. The study found no additional benefits beyond eight drinks a day, and more than nine could actually increase cardiovascular risks. “Too much caffeine can raise blood pressure and affect the heart,” Holland cautioned.

Nutrition expert Dr. Eamon Laird from Atlantic Technological University in Ireland, who was not involved in the study, called it a “well-designed observational study” but advised caution in interpretation.

“There are limitations — such as recall bias and lifestyle differences — that could influence results,” he noted. “It’s possible that people who drink more tea and coffee also make other healthier lifestyle choices.”

Laird added that even simple factors like whether milk, sugar, or cream were added could affect health outcomes.

A Simple Recipe for Hydration and Longevity

Experts say the takeaway is simple: aim for seven to eight total drinks a day, balancing water, tea, and coffee. A typical day might include two cups of coffee in the morning, tea throughout the day, and water in between.

“It’s a pattern that promotes hydration while layering in the biological benefits of plant compounds,” said Dr. Holland. “A simple rhythm of hydration and health that fits naturally into daily life.”

Still, moderation remains key — as Laird concluded, “As with everything in nutrition, balance is what truly matters.”