Coffee or tea is the basis for many people to start in the morning with a cup of tea or coffee. Moderate consumption of these beverages is safe for health reasons and is safe for those who drink moderately, but the extent of consumption, preparation, and preexisting health problems may affect kidney health.
But Dr. Vikram Kalra, a nephrologist, believes the relationship between caffeine, hydration, and kidney function will help people make educated decisions about their tea and coffee drinking habits.
How much caffeine affects kidney function?
Caffeine has a mild diuretic effect and, at the same time, can temporarily increase urine production. This effect may be more obvious and noticeable among people who don’t drink caffeinated beverages regularly.
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But low tea and coffee use usually leads to daily fluid consumption, and it doesn’t cause dehydration. Moderate tea consumption for most healthy adults in moderation is not likely to damage kidneys.
The key is the amount of caffeine consumed. Larger amounts of caffeine drunk a day may increase the overall caffeine consumption; coffee, tea, energy drinks, etc., and caffeinated products can be combined.
Do excessive tea and coffee increase kidney disease?
Caffeine can temporarily increase blood pressure. High blood pressure is a major risk factor for chronic kidney disease, as it can damage the blood vessels that help the kidneys filter waste.
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People who already have high blood pressure or kidney problems should talk to their doctor about caffeine intake. Their consumption of caffeine as the health condition and medications change will depend on their dietary needs.
Another major concern is kidney stones. Tea contains oxalates that are naturally occurring compounds and can cause calcium oxalate stones in susceptible people if they are taken in large quantities.
But the risk varies by diet, fluid intake, and a patient’s history of kidney stones. Coffee has not been found to be associated with elevated kidney stones, and there are studies that indicate that it is associated with a lower risk.
How do sugar and milk in tea and coffee affect kidney health?
The content of tea and coffee can also contribute to the overall health benefits.
If sugar and flavored syrups or sweetened creamers are added to your diet, you may gain weight. Those habits can increase your risk of type 2 diabetes, which is one of the most common causes of chronic kidney disease.
High blood pressure and diabetes are two of the leading risk factors for kidney damage. For long-term kidney health, the management of added sugar and a balanced diet could be effective.
Milk and other ingredients may also be considered by people with kidney disease. Based on their nutritional needs and laboratory results, they may need individualized dietary advice on some ingredients.
How much tea and coffee is safe to drink daily?
For most healthy people, moderate tea and coffee consumption is considered reasonable.
The FDA (U.S. Food and Drug Administration) lists 400 milligrams of caffeine per day as an amount not generally associated with adverse effects in most adults. But individual tolerance varies, and some people may experience side effects at lower amounts.
Caffeine content varies from beverage to beverage, serving size, and preparation method. A large coffee may have much more caffeine than a small cup of tea.
When estimating daily intake, we need to take in caffeine from tea, coffee, energy drinks, cola, and some supplements.
In addition to caffeine, hydration, sugar control, and blood pressure and blood glucose regulation are important for kidney health.
Why should people with kidney disease avoid drinking tea and coffee?
Not everyone with kidney disease should stop drinking tea or coffee. The level of consumption is, however, a function of kidney health, blood pressure, other medical conditions, and diet.
People with kidney stones may also ask about their fluid intake and whether lowering high-oxalate foods or beverages is right for their specific condition.
When you’re in a situation, you need to consult a nephrologist or registered dietitian before you make major dietary changes if you have chronic kidney disease or take medication for blood pressure.
How can we make our tea and coffee habit healthier?
A few real-life changes can make tea and coffee a little easier if we drink tea and coffee and be conscious of kidney health:
- Keep track of how many cups you drink and consider their size.
- Limit added sugar, flavored syrups, and sweetened creamers.
- Drink water regularly rather than relying entirely on tea and coffee for fluids.
- Monitor your blood pressure and blood glucose levels as recommended by your healthcare professional.
- Seek personalized advice if you have kidney disease, recurrent kidney stones, or high blood pressure.
For most healthy adults, tea and coffee don’t have to be excluded solely for kidney health. Moderation, mindfulness, and good medical advice should be taken into consideration.
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