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Written by Navneet Kaur, M.Sc. Nutrition & Dietetics


Possible Side Effects of Drinking Excess Tea

Tea is one of the most widely consumed beverages globally, known for its numerous health benefits, including antioxidants and potential weight management properties. However, like many things in life, moderation is key. Drinking excessive amounts of tea can lead to certain side effects that can negatively impact your health. 


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Tea contains caffeine, and excessive consumption can lead to caffeine overdose symptoms like restlessness, nervousness, and rapid heartbeat. 

1. Caffeine Overload 

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High caffeine intake from excessive tea consumption, especially close to bedtime, can disrupt your sleep patterns and lead to insomnia. 

2. Sleep Disturbances 

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Drinking too much tea on an empty stomach can cause nausea, stomach cramps, and acid reflux due to its high tannin content. 

3. Stomach Discomfort 

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Tea contains compounds that can inhibit the absorption of non-heme iron (plant-based iron) from your diet, potentially leading to iron deficiency over time. 

4. Iron Absorption 

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Excessive tea consumption can lead to an elevated heart rate and palpitations, especially in sensitive individuals. 

5. Increased Heart Rate 

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High caffeine levels in tea can exacerbate anxiety and nervousness in some individuals 

6. Anxiety and Nervousness 

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Excessive tea consumption may interfere with calcium absorption, potentially affecting bone health, especially if you have a calcium-deficient diet. 

7. Bone Health 

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Tea, especially black tea, can stain your teeth over time, leading to discolouration. 

8. Teeth Staining 

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Tea is rich in oxalates, which can contribute to the formation of kidney stones in susceptible individuals when consumed in large quantities. 

9. Kidney Stones 

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Although tea is a liquid, excessive consumption can have a diuretic effect, leading to increased urination and potential dehydration if not balanced with adequate water intake. 

10. Dehydration 

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Kiwi is not only a delicious and refreshing fruit but also a nutritional powerhouse. Its wide range of health benefits, including immune system support, digestive aid, heart health promotion, and skin nourishment, make it a valuable addition to your diet. 


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