Neeta Sharma Neeta Sharma Asked 7 months ago

Can diet drinks cause kidney stones?

I try to avoid sugary drinks and opt for diet versions, but I've had kidney stones before. Recently, I read online that diet drinks might increase the risk of stones. Is there any truth to this claim?

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7 answers

Manju Warrier Manju Warrier Joined Apr 2026 6 months ago
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Yes, some diet sodas have phosphoric acid which can increase the risk of calcium oxalate kidney stones. I had a 5mm stone last year, and the urologist strictly told me to cut down on all carbonated drinks, even the zero-calorie ones. Drink plenty of fresh water with lemon instead to prevent stone formation.

Sahil Aneja Sahil Aneja Joined Mar 2026 7 months ago

Dehydration is the biggest cause of kidney stones, and relying on diet drinks instead of pure water makes it worse. I always make sure my daily water intake is on point before even touching any zero-calorie fitness drinks. Keep your hydration clean first.

Rahul Verma Rahul Verma Joined Jan 2026 7 months ago

I drink at least one diet soda daily and recently started getting a dull ache in my side. Has anyone else felt this? I am really scared that it might be kidney stones forming because of the artificial ingredients.

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Consult a neurologist

Siddharth Mehta Siddharth Mehta Joined Jan 2026 7 months ago

While diet drinks might not directly cause them, the sodium and phosphoric acid in them can definitely increase your risk if you are already prone to stones. If you are busy, just keep a 2-liter water bottle on your desk to ensure you stay hydrated, and limit the sodas.

Manju Sharma Manju Sharma Joined Jan 2026 7 months ago

There is a known link between highly carbonated sodas and kidney issues, so please be cautious. If you are experiencing sharp back or side pain, or pain while urinating, get an ultrasound done immediately. Don't rely on self-diagnosis or online forums for kidney health.

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Pooja Malhotra Pooja Malhotra Joined Mar 2026 7 months ago

I used to panic every time I drank a diet soda, thinking my kidney was going to fail because of the rumors. My doctor reassured me that an occasional glass won't cause stones as long as you drink 3 liters of water daily. Just balance it out and don't stress too much.

Usha Kiran Usha Kiran Joined Jun 2026 4 months ago

Yes, the high phosphate content in many dark diet sodas can contribute to stone formation by making urine more acidic. My brother-in-law went through this pain recently. It is much safer to switch to barley water or simple coconut water for hydration.

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