Many people think that coffee causes diseases such as insomnia, high blood pressure and diabetes. In addition to these conditions, the Centers for Disease Control reported only 4.5 million new cases of nephropathy in 2009, and some researchers wondered if it was related to coffee consumption. Scientists now believe that caffeine may contain antioxidants beneficial to health, after all, it may not help kidney disease.
Since the discovery of coffee in Ethiopia more than a thousand years ago, the various health effects of caffeine have been written page by page. As a psychoactive substance, caffeine is restricted or even prohibited by many reasons, including religious belief and "over-stimulation." Books about possible sexual hysteria have also been written
But let's talk about it objectively and healthily. I will limit the cardiovascular and renal effects of coffee (the effect of coffee is dose-dependent; note that an 8-ounce coffee contains about 100-200 mg of caffeine)
Glomeruler filtration rate
Glomerular filtration rate or glomerular filtration rate (GFR) is the best measure of renal function and determines if you have kidney disease and staging. Elevated GFR is associated with an increased risk of kidney disease. A January 2010 study published in the British Journal of Nutrition found that habitual coffee, which consumed one or more cups of coffee per day, was associated with an increase in GFR levels. Researchers can not pinpoint the link between coffee consumption and kidney disease and suggest further research on these effects.
Kidney stones
Kidney stones are hard tumors that develop from urolithiasis and can be quite painful. Diet may play a role in the development of kidney stones. Researchers at Harvard University published the results of a study in the 1996 American Journal of Epidemiology that found 8 ounces daily. Whether it is caffeinated or decaffeinated coffee, the risk of kidney stones is reduced by 10%. A 2004 study in the urological journal reported that caffeine may modestly increase the risk of developing specific types of stone calcium oxalate.
Polycystic kidney disease
Polycystic kidney disease or PKD is a common genetic disease that can lead to high blood pressure, kidney failure, and other illnesses. A study of laboratory rats published in the November 2001 issue of the American Journal of Nephrology found that caffeine exacerbates hypertension in PKD rats and the researchers suggest that you limit your coffee consumption if you have PKD In 4 or daily caffeinated coffee.
Renal Failure
Kidney failure, when your kidneys stop working, may require dialysis or kidney transplant. Researchers at the University of Pittsburgh Medical School evaluated the impact of long-term caffeine use on renal failure and published their findings in the International Journal of Kidney in 2002. They found that feeding caffeine to obese diabetic rats exacerbates kidney failure in mice. This effect may be due to an increase in cholesterol levels and proteinuria, or an excess of protein in the urine.
Given the detrimental effects of hypertension on the kidneys, it seems likely that reducing caffeine intake can indirectly have a beneficial effect on the kidneys. However, evidence of this has not been completely eliminated, although it is possible that this "meaningful" caffeine can harm the kidneys. So if we look at the overall data available so far, consuming 3-4 cups of coffee per day does not increase the risk of kidney disease. This applies to ordinary people. There are also special situations like kids and the elderly that need to be aware of other cardiovascular and diuretic effects.
The information I bring home: If you do not meet any of the special categories mentioned above, consuming the right amount of coffee may be safe from a kidney perspective!
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