Is it OK to drink black tea all day?
Ava Arnold
Updated on January 04, 2026
Drinking black tea in moderate amounts (about 4 cups daily) is likely safe for most people. Drinking more than 4 cups of black tea daily is possibly unsafe. Drinking large amounts might cause side effects due to the caffeine content.
What happens if I drink too much black tea?
Though moderate intake is healthy for most people, drinking too much could lead to negative side effects, such as anxiety, headaches, digestive issues, and disrupted sleep patterns. Most people can drink 3–4 cups (710–950 ml) of tea daily without adverse effects, but some may experience side effects at lower doses.Is it OK to just drink tea all day?
"For most healthy adults, it's safe to consume up to 400mg of caffeine a day — that's about four cups of regular coffee or eight cups of black tea. Green tea has slightly less caffeine than black tea (about 25mg per cup), and herbal teas usually aren't caffeinated."Does black tea harm your body?
Drinking large amounts of black tea -- more than four or five cups a day -- may cause health problems. That's mostly because of caffeine-related side effects. Side effects of black tea (most often in high amounts) may include: Anxiety and difficulty sleeping.What are the cons of black tea?
These include headache, vomiting, diarrhea, nervousness, sleep problems, dizziness, irritability, irregular heartbeat, heartburn, tremor, ringing in the ears, convulsions and confusion, as well as a dependence. Drinking black tea may worsen anemia in people with iron deficiency, and could worsen anxiety disorders.What Happens To Your Body When You Drink Black Tea Every Day
Does black tea count as water intake?
Coffee and tea also count in your tally. Many used to believe that they were dehydrating, but that myth has been debunked. The diuretic effect does not offset hydration.How much black tea can I drink a day?
Drinking black tea in moderate amounts (about 4 cups daily) is likely safe for most people. Drinking more than 4 cups of black tea daily is possibly unsafe. Drinking large amounts might cause side effects due to the caffeine content.Can I drink tea all day instead of water?
If you're a regular tea drinker, you can continue drinking tea and it will contribute to your overall hydration level. It shouldn't replace water, though, especially if you're drinking more than six or seven cups of black tea per day. It's important to incorporate some water into your daily fluid intake.Is black tea dehydrating?
Again, the researchers noticed no difference in urine production or hydration levels between the two drinks. They concluded that black tea seems to be as hydrating as water when consumed in amounts smaller or equal to 6 cups (1,440 ml) per day ( 10 ).Is black tea healthier than coffee?
Winner: It DependsBoth beverages offer health benefits and the best one for you will depend on taste and what you're looking for. If you want to lose weight, black tea (or green tea!) is a better choice than coffee. If you need a high-energy kick, coffee's higher caffeine content is the clear winner.