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Would a high-tech water bottle get you to drink more water and possibly avoid recurring kidney stones? Washington University is seeking people to take part in a nationwide clinical trial to find out.

The National Institutes of Health (NIH) will test whether using a "smart" water bottle will cause people to drink more water, therefore go to the bathroom, and cause fewer recurrences of kidney stones.

The bottle is called Hidrate Spark. It monitors fluid consumption and connects to an app. The study will also offer financial incentives for hitting fluid targets and have volunteers meet with a health coach.

The goal is to drink enough water to pee about 10.5 cups per day.


NIH is seeking 1,642 people to take part in the Prevention of Urinary Stones with Hydration (PUSH) study. Half of the people will be in the intervention group, and half will be in a control group.

Participants must be at least 12 years old, have had at least one symptomatic stone in the past three years, have a low urine amount as measured over 24 hours, and own a smartphone.

To sign up, contact klima@wustl.edu

Washington University is one of four universities taking part. The others are the University of Pennsylvania, University of Texas Southwestern Medical Center, and The University of Washington.