You don’t feel it, but your kidneys do: Doctor explains why daily habits matter

Most people don’t really think about their kidneys. They’re not like your heart or lungs, you don’t feel them working. But they’re quietly doing a lot, all the time. Your kidneys filter waste, balance fluids, control electrolytes, and even help regulate blood pressure. Basically, they keep your internal system running clean and stable.
And when they’re working well, you won’t notice a thing. That’s the tricky part.
But when kidney health starts slipping, it doesn’t always show up clearly at first. You might feel a bit more tired than usual, notice swelling, or changes in how often you pee. Easy to ignore, honestly. And by the time symptoms become obvious, some damage may already have happened.
"Kidneys are really strong organs that work hard without anyone noticing. They clean out harmful stuff, keep the right amount of liquid in the body, and help control blood pressure all the time. Yet they can also suffer from slow damage caused by daily habits that people usually don't notice. Health experts say that keeping your kidneys healthy doesn't always need big changes; often, small adjustments to your daily habits can make a big difference over time," Prof (Dr) Vishal Singh, Director – Nephrology, Max Super Speciality Hospital, Vaishali told TOI Health. So a lot of it comes down to everyday habits. Staying hydrated, not overdoing painkillers, keeping blood sugar and blood pressure in check. Small things, but they add up.

Prof (Dr) Vishal Singh: One of the best ways to take care of your kidneys is to drink enough water. Drinking water often helps the body filter things properly and lowers the chance of getting kidney stones or urinary infections. It's also very important to control blood pressure and blood sugar levels, because high blood pressure and diabetes are the main causes of chronic kidney disease. By eating less processed foods and reducing the use of table salt during food preparation, you can decrease the stress placed on your kidneys caused by excess sodium intake.

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Maintaining a healthy weight is another factor that is crucial when it comes to maintaining good kidney function. Excess body weight causes inflammation and makes it harder for insulin to work correctly, leading to increased stress on the kidneys (along with all other organs). In addition, regular exercise (30 minutes of brisk walking most days) helps improve blood flow and increases how effectively your body uses energy; this ultimately helps you maintain good kidney function.

Prof (Dr) Vishal Singh: Many people do not know about how their daily habits can contribute to stress on their kidneys. For example, taking too many pain relievers (especially non-selective NSAIDs) without consulting your physician, is quite common. These medicines can lower the amount of blood that reaches the kidneys, especially if they are used often or if a person is dehydrated.

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Eating a lot of protein without any guidance can be unsafe, especially for people who might already have kidney problems that haven't been diagnosed yet. Protein is important, but eating too much can make the kidneys work harder. Another overlooked factor is poor sleep. Long-term lack of sleep changes the balance of hormones and how blood pressure is managed, which can harm kidney health.


Not taking repeated urinary infections seriously or using self-medication instead of getting a proper medical checkup can let hidden damage happen over time. Experts say that kidneys usually start to have problems without showing clear signs until a lot of their function is gone.

Prof (Dr) Vishal Singh: For healthy adults who don't have any risk factors, getting regular blood and urine tests every few years might be enough. People who have diabetes, high blood pressure, heart problems, obesity, a family history of kidney issues, or take medications over a long time should get their kidney function tested at least once a year. Simple tests that check serum creatinine, estimated glomerular filtration rate (eGFR), and urine protein can find issues long before any symptoms show up.
Finding kidney problems early is important because if they are caught soon enough, the damage can sometimes be slowed down or even fixed with the right treatment at the right time.

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Prof (Dr) Vishal Singh: Stopping smoking is good for your kidneys. Smoking harms blood vessels, lowers the amount of oxygen that reaches the body, and speeds up the formation of scars in the kidneys. Research shows that quitting smoking can help slow down the worsening of kidney disease and make treatments more effective.
Drinking too much alcohol can make you dehydrated, increase your blood pressure and throw off your body's balance of chemicals. Drinking less alcohol, or not drinking at all, can help keep blood pressure steady and ease the pressure on the kidneys. As time goes on, these changes can help the kidneys work better overall.

Doctors usually tell patients that kidneys don't usually show problems until the damage is already pretty bad. Fatigue, swelling, or changes in urination usually show up later. “The message is straightforward yet strong: pay attention to the small signs and everyday decisions. By drinking enough water, eating in a healthy way, avoiding too many medicines, staying active, and getting tested regularly when needed, most people can keep their kidneys healthy as they get older. Taking small steps every day can help keep these important organs healthy for many years,” suggests Prof (Dr) Vishal Singh.

Medical experts consulted
This article includes expert inputs shared with TOI Health by:
​Prof (Dr) Vishal Singh, Director – Nephrology, Max Super Speciality Hospital, Vaishali
Inputs were used to explain the common habits that put extra strain on the kidneys without any early symptoms.