Hunger vs. thirst: tips to tell the difference

How often have you heard your stomach growl, felt a little light-headed or had an oncoming headache and immediately reached for a snack? You might be surprised to find that what can feel like a hunger pang is actually thirst. These two sensations ride a fine line, and being able to tell the difference can help you be successful with your daily diet!

When true hunger strikes, many people are guilty of opening the fridge or pantry and immediately looking for ready-to-eat or pre-packaged foods for a quick fix. The next time you get a stomach pang, though, pause and ask yourself if you’re really hungry or could you just be thirsty? Here are some common hunger symptoms to set the basis for your answer:

  • Empty feeling in your stomach
  • Stomach gurgling or rumbling
  • Dizziness, faintness or light-headedness
  • Headaches
  • Irritability
  • Lack of concentration
  • Nausea

The truth is, most people confuse thirst and hunger, often mistaking the former for the latter. Clinical studies have shown that 37% of people mistake hunger for thirst because thirst signals can be weak. This can create added issues for chronic kidney disease patients who are sometimes placed on fluid restrictions to reduce their kidneys’ workload. Always follow these restrictions, but also make sure your body is getting enough fluid, too. Signs of thirst symptoms may include:

  • Dry skin
  • Feeling sluggish
  • Dry-eyes
  • Increased heart rate
  • Headache
  • Nausea
  • Dizziness

With symptoms that overlap can easily lead to misdiagnosis when it comes to hunger vs. thirst. Pay close attention to these feelings when you have them and think about what you’ve eaten or drank so far for the day. Here are a few helpful reminders to keep your cravings in check:

  • Don’t wait until you’re thirsty to grab a drink. Staying hydrated throughout the day helps curb cravings, keeps you alert, and helps digestion. Make sure you’re reaching your daily fluid allowance. Also be sure to monitor your fluid intake to avoid dehydration and its pesky symptoms, like nausea and headaches.
  • Listen to your body. Don’t be tempted to reach for whatever snack is in sight at the first sign of “hunger.” To figure out if that feeling is hunger or thirst, drink water—within your fluid allowance—and then wait 15 minutes. If you were truly hungry, you might still feel a stomach pang, whereas if you were just thirsty, you’ll feel satisfied.
  • Opt for kidney-friendly foods when hunger strikes. Fiber-rich snacks, which are low in fat and high in antioxidants, are a great option to help chronic kidney patients stay within protein, phosphorus, sodium and potassium guidelines. A few examples include apples, berries, and red and purple-skinned grapes.

Information or materials posted on this blog are intended for general informational purposes only, and should not be construed as medical advice, medical opinion, diagnosis or treatment. Any information posted on this blog is not a substitute for patient specific medical information or dietary advice. Please consult with your healthcare team or dietitian for a more complete dietary plan and recommendations.


  1. Annette James

    I can’t bear anything sweet, fruit is unbearable to me. So what other ‘kidney friendly’ foods can I have instead of the fruit ? I’d love to know.

    • Kyle Kataryn

      avoid: salts, potassium, phosphorus.
      examples: (see links)

      ½ cup frozen peas, cooked
      ½ cup broccoli, cooked
      ½ cup green/yellow beans
      ½ cup cauliflower, cooked
      ½ cup zucchini, cooked
      ½ cup carrots, cooked
      ½ cup corn, cooked
      ½ cup cabbage (raw/cooked)

      1 biscuit Shredded Wheat
      3 cups air‐popped popcorn
      1 slice Country Harvest Source
      One Enriched White Bread
      1 slice McGavins “Smart”
      White Bread with Whole Grains
      ½ cup oatmeal
      1 slice 60% whole wheat bread
      *1 tablespoon ground flax

    • Emily Sorenson

      Fruits high in citric acid like oranges or lemons are good for breaking things down in your kidneys. Even adding a little lemon juice to your water helps prevent kidney stones.

  2. Yasmeen

    Love the way it said



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