4. Caffeine

This must be a jolt for those who rely on their morning cup to get their kicks. Since caffeine is a diuretic (a mild one), it affects the kidney’s ability to absorb water. However, in moderation, this won’t mess up with kidneys’ capacity to access water to get their work done. Nevertheless, researches indicate that long-term caffeine intake can kick up the risk of kidney stones. And, it is worse for those who have chronic kidney diseases.

In addition, caffeine consumption should be taken with due thought, if one has the problem of high blood pressure.