As the mercury drops and people cozy up indoors, many unknowingly put their kidney health at risk by cutting back on water, a top nephrologist warns. Winter dehydration isn’t just uncomfortable—it might be putting your kidneys in harm’s way, triggering everything from urinary tract infections to kidney pain and stones.
Dr Adnan Khan, an expert on kidney health, says it’s common for people to underestimate their hydration needs when it’s cold outside. “Most folks either skip drinking water altogether or just have two or three glasses a day, usually only with meals,” he says. “That’s simply not enough, and it’s why we see a spike in kidney complaints every winter.”
According to Dr Khan, this lack of water can lead to a range of issues, such as urinary tract infections, inflammation in the bladder or urinary tract, kidney pain, and even kidney stones—cases which noticeably jump during the winter months.
He points to the behavioral changes in colder weather. The lack of thirst means people don’t reach for water, so Dr Khan urges everyone to try for eight to ten glasses daily, no matter how chilly it gets. And forget about relying on tea or coffee to take up the slack: “They help a little, but they’re no substitute for plain water,” he explains.
A steady flow of water, he says, can ward off infections, stone formation, and persistent kidney pain. If you notice symptoms, Dr Khan recommends seeing a doctor right away. “Ideally, consult a nephrologist or urologist nearby,” he suggests. Painkillers or medications may help you feel better, but he stresses the importance of follow-up care.
“When symptoms go away, it’s crucial to get checked for kidney damage, stones, or other lingering problems,” Dr Khan adds.
There’s another culprit in winter dehydration: indoor heating. With windows and doors closed tight and heaters on full blast, humidity levels plummet. That, says Dr Khan, causes your body to lose moisture every time you breathe—a process known as insensible water loss. “This kind of evaporation puts extra pressure on your kidneys,” he warns.
Dr Khan recommends a little ventilation in rooms and offices. “Keeping heaters running in a completely sealed space isn’t good for your health overall,” he warns.
So as you stay warm this winter, don’t forget the simple act of reaching for that glass of water—it could make all the difference for your kidneys.
