How Excessive Coffee and Tea Drinking Caused Severe Anemia in a College Student

A college sophomore preparing for her TOEFL exam began feeling constantly drained — struggling to climb stairs without gasping for air and lacking energy for basic tasks. At just 20 years old, she expected vitality, not exhaustion. When routine bloodwork revealed a dangerously low hemoglobin level of 5 grams per deciliter (normal is 11 g/dL), doctors identified a surprising root cause linked to her daily routine.

Yes: drinking five to six cups of coffee plus strong tea every day in an attempt to fight fatigue had severely hindered her body’s ability to absorb dietary iron, leading to iron-deficiency anemia.

Why Coffee and Tea Can Block Iron Absorption

According to Dr. Zhou Ping, an internal medicine specialist at Hangzhou Traditional Chinese Medicine Hospital, both coffee and tea contain natural compounds that bind to iron and inhibit its uptake in the digestive tract. The tannins (or polyphenols) in tea and the polyphenols in coffee react with iron to form insoluble compounds, making it much harder for your body to absorb this essential mineral from food.

The Real Risk of Heavy Consumption

The young woman’s daily habit — consuming five to six cups of coffee along with strong tea consistently over several months — created the perfect storm for nutritional deficiency. What made it worse, according to the doctor, was that she often drank these beverages with or right after meals. Post-meal consumption is particularly harmful because the iron you get from food hasn’t yet been absorbed, and tannins from tea bind more aggressively to it while it's still in your stomach.

What Actually Causes Iron-Deficiency Anemia

Iron-deficiency anemia develops when your body doesn’t have enough iron to produce hemoglobin, the protein in red blood cells that carries oxygen. In this case, the persistent intake of coffee and strong tea was preventing dietary iron from being absorbed effectively, despite her likely consuming iron-containing foods. Over time, this led to a significant drop in her hemoglobin levels — from a normal 11 g/dL down to just 5 g/dL, causing her extreme fatigue and shortness of breath.

How to Prevent This While Staying Alert

If you’re relying on caffeine to push through long study or work sessions, be mindful of when and how much you drink. To protect your iron levels:

• Avoid drinking strong tea or coffee with meals.
• Don’t consume these beverages within an hour before or after eating iron-rich foods.
• Include plenty of iron sources in your diet such as animal liver, eggs, and whole grains.
• If you're at risk of or diagnosed with anemia, consider iron supplements under medical guidance.

What to Do If You’re Already Feeling Fatigued

If you’ve been drinking multiple cups of coffee and tea daily and begin experiencing symptoms like constant tiredness, weakness, or trouble concentrating, it’s worth checking your iron levels. A simple blood test can confirm whether you’re anemic, and your doctor can recommend dietary adjustments or iron supplements if needed.

Frequently Asked Questions

How much coffee and tea did the woman drink daily?

The 20-year-old student consumed five to six cups of coffee along with strong tea every day for months in an effort to stay awake while studying for her TOEFL exams.

What was her hemoglobin level when diagnosed?

Her blood test showed a dangerously low hemoglobin level of 5 grams per deciliter, well below the normal range of 11 g/dL, indicating severe iron-deficiency anemia.

What compounds in coffee and tea block iron absorption?

Tannins (polyphenols) in tea and polyphenols in coffee bind with iron to form insoluble compounds, which significantly reduce the body’s ability to absorb iron from food.

Does drinking coffee and tea always cause anemia?

No, occasional consumption is generally safe. However, excessive and regular intake — especially with meals or right after eating — can interfere with iron absorption and potentially lead to deficiency over time.

How can I get enough iron if I drink coffee or tea?

Avoid drinking coffee or strong tea during or right after meals. Focus on iron-rich foods like liver, eggs, and grains, and consider having your iron levels checked if you feel persistently tired.

Should I take iron supplements if I suspect anemia?

Only take iron supplements under a doctor’s advice. A blood test is required to confirm anemia, and self-supplementing without diagnosis can lead to other health issues.

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