The Best Morning Drink for Better Kidney Health, According to Dietitians One drink was the clear winner. Here’s why you should start your day with it. By Lisa Valente, M.S., RD Published on April 3, 2026 Reviewed by Dietitian Madeline Peck, RDN, CDN In This Article Dilute Waste Hydrate Blood Flow Drink More Water Other Tips Illustration of two human kidneys with intricate patterns depicted on a pink background representing kidney health or function Credit: Getty Images. EatingWell Design. Drinking water in the morning is a simple way to support healthy kidneys. Prioritizing water in the morning helps dilute waste, support blood flow and maintain hydration. Consume more water by pairing it with your morning habits and drinking more tea. Our diet plays a big role in how our kidneys function. “Your kidneys are responsible for getting rid of the waste from everything you eat and drink. So, it isn’t surprising that nutrition has the potential to be both incredibly helpful or harmful to kidney health,” says Melanie Betz, M.S., RD, CSR. Kidneys are hardworking organs responsible for filtering blood, removing waste and creating urine.1 By choosing nutritious foods and beverages, you can help your kidneys function at their best. To start your morning off right, dietitians unanimously agree that water is the best wake-up drink to support healthy kidneys. Read on to learn how water supports your renal system by promoting the filtration process, hydration and blood flow. 1. Dilutes Waste When you wake up in the morning, it’s likely been hours since you’ve had a sip of water. “Water is the best morning drink for your kidneys because it gives your kidneys what they need to start the day doing their job,” shares Beverly Garden, RD. “After your body goes hours without fluids, drinking water in the morning dilutes waste products so your kidneys can filter more easily,” she adds. The kidneys are made up of more than a million nephrons, which act as a two-step filter for your blood. The glomerulus filters the blood, and the tubule returns the good stuff back to your blood and removes what your body doesn’t need as waste and water to become urine.1 Hernandez notes, “Water and fluids are what keep that system running efficiently. When you’re well-hydrated, the kidneys can easily filter waste products and excess vitamins and minerals out of the body by flushing them out through urine,” explains Jen Hernandez, RDN, CSR, LDN. Diluted urine, which happens when you drink enough water, helps support your kidneys. Having an output of at least 3 liters of urine daily has been linked with better kidney function over time, while less than 1 liter of urine daily is associated with a decline in kidney function.2 Don't Miss Why Drink Water? How Water and Health Are Connected mineral water being poured into clear glass 5 Foods That Are Packed with Electrolytes, According to Dietitians a recipe photo of the Sesame-Ginger Watermelon-Avocado Rice Bowls 2. Keeps You Hydrated Saying water helps keep you hydrated is a little bit like saying water gets you wet, but that doesn’t make drinking it any less important. “When you are dehydrated, your kidneys aren’t filtering as much as they should, which can damage them over time, or if dehydration is severe enough, it can lead to chronic kidney disease,” shares Betz. She adds, “Water is cheap, accessible and is the best way to hydrate for the vast majority of people. We really don’t need fancy electrolyte or hydration powders to help with hydration.” The kidneys don’t just filter less when you’re dehydrated; they also influence hormones that affect blood pressure. To help counteract dehydration and balance fluids, they release renin, an enzyme that starts a cascade of hormonal shifts from your adrenal glands that encourage your body to retain sodium and water when you’re dehydrated. The activation of the renin-angiotensin-aldosterone system can elevate blood pressure and keep your kidneys working overtime.34

The #1 Morning Drink for Kidney Health

The Best Morning Drink for Better Kidney Health, According to Dietitians One drink was the clear winner. Here’s why you should start your day with it. By Lisa Valente, M.S., RD, Published on April 3, 2026, Reviewed by Dietitian, Madeline Peck, RDN, CDN In This Article… Our diet plays a big role in how our…

Read More
coffee beans

Drinking Coffee May Add 2 Years to Your Life – Eating Well

Drink Up, Coffee Lovers—A Study Suggests Coffee Could Add Years to Your Life Find out how much coffee seems to have the most benefit. By Carrie Myers, M.S., Published on January 19, 2026, Reviewed by Dietitian, Sarah Pflugradt, Ph.D., RDN, CSCS In This Article Coffee sure has made the rounds regarding its health status. Many…

Read More

Best Foods to Preserve Muscle Mass as You Age – Eating Well

About Us Subscribe Dietitians Reveal 7 Muscle-Preserving Foods to Support Strength as You Age Want to protect your strength as you age? Dietitians say these nutrient-packed foods can help. By Victoria Whittington, RDN, Updated on January 16, 2026 Reviewed by Dietitian, Alyssa Pike, RDN In This Article Preserving muscle mass as we age is essential…

Read More
coffee beans

What Happens to Your Blood Sugar When You Drink Coffee – Eating Well

What Happens to Your Blood Sugar When You Drink Coffee From caffeine to creamers, experts break down how your morning coffee may influence blood sugar levels. By Cheyenne Buckingham, Published on December 23, 2025 Reviewed by Dietitian, Kelly Plowe, M.S., RD Your blood sugar naturally fluctuates throughout the day. “Levels rise after meals for everyone…

Read More

Verified by MonsterInsights