
GLP-1 medicines are gaining traction as insurance coverage protection expands and extra folks discover them as a part of their well being journey (11). However whereas entry is bettering, many sufferers aren’t getting the diet steering they should handle widespread unintended effects, placing them in danger for points like dehydration.
Actually, many years of analysis present that individuals taking GLP-1 medicines could also be extra vulnerable to dehydration, particularly when consumption drops or unintended effects make it more durable to eat and drink sufficient (2,3).
The excellent news? Staying effectively hydrated is totally doable with the proper methods. Forward, we’ll break down why dehydration can occur on GLP-1 medicines, the indicators to look at for, and easy, sensible suggestions that will help you keep hydrated and supported each step of the way in which.

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Why GLP-1 Medicines Can Improve Dehydration
GLP-1 medicines work partly by decreasing urge for food, which is an enormous motive they’re efficient for weight reduction (4). However together with fewer meals cravings, analysis reveals that some folks taking these medicines may additionally be at increased danger for dehydration and nutrient shortfalls (3,5).
There are a few causes this could occur. First, unintended effects like nausea, vomiting, and diarrhea are pretty widespread, particularly early on, and all of those can have an effect on your physique’s fluid stability (9). Second, when meals consumption drops, it’s straightforward for fluid consumption to fall too. Should you’re consuming much less total, you might not really feel as motivated to drink, which may quietly set the stage for dehydration (7).
In additional extreme circumstances, ongoing fluid loss can pressure the kidneys (8). The excellent news? There are proactive steps you possibly can take to guard your hydration and total well being. Earlier than we dive into these methods, let’s stroll by the commonest indicators of dehydration to maintain in your radar.

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Frequent Indicators You Could Be Dehydrated
Your physique is fairly good at sending indicators when your fluid consumption isn’t assembly your wants. Whether or not dehydration is said to GLP-1 unintended effects or just not consuming sufficient, the warning indicators are likely to look very comparable (9).
Frequent indicators of gentle dehydration embrace (9):
- Feeling thirsty
- Dry mouth
- Complications
- Darkish yellow urine
- Urinating much less typically than ordinary
- Muscle cramping
If dehydration continues over time, signs can grow to be extra critical. Indicators of extra extreme dehydration embrace (9):
- Little to no urination, or very darkish yellow or amber-colored urine
- Dry, shriveled-looking pores and skin
- Dizziness or lightheadedness
- Irritability or confusion
- Fast heartbeat
- Fast respiration
- Sunken eyes
- Excessive tiredness or listlessness
- In extreme circumstances, shock or lack of consciousness
Recognizing these indicators early may also help you’re taking motion earlier than dehydration turns into an even bigger subject, particularly when you’re managing unintended effects from GLP-1 medicines.
How A lot Water Do You Want on GLP-1s?
Fluid wants aren’t one-size-fits-all. How a lot you want relies on elements like your age, physique measurement, exercise stage, and even the local weather you reside in (10). That’s why it’s essential to work along with your healthcare workforce to determine a each day fluid aim that is sensible for you.
On common, analysis revealed in JAMA Inner Medication means that many individuals taking GLP-1 medicines ought to intention for about 8 to 12 cups of fluids per day (roughly 2 to three liters), together with consuming loads of high-water meals (7). That mentioned, this quantity continues to be decrease than the overall each day water suggestions for adults ages 19 to 30, that are 3.7 liters per day for males and a pair of.7 liters per day for girls (10).
The most important takeaway? Let your physique information you. Search for gentle, pale-colored urine and common toilet journeys all through the day. Take note of how you’re feeling, too. Your vitality ranges, pores and skin, and total temper can all supply useful clues about whether or not you’re staying adequately hydrated.

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Tricks to Keep Hydrated Throughout Your GLP-1 Weight Loss Journey
You don’t want so as to add one other large activity to your psychological to-do checklist to drink extra water. Staying hydrated will be so simple as constructing small, constant habits into your day. As MyFitnessPal dietitian Katherine Basbaum places it, “Hydration shouldn’t really feel like a chore, make it enjoyable! Attempt including lemon or fruit to your water, use a reusable bottle you truly like, and observe your fluids within the app. Set a each day aim, and when you hit it persistently for a few weeks, reward your self with one thing enjoyable, like that new water bottle you’ve been eyeing.”
Attempt these easy tricks to keep hydrated:
- Begin your day with water. Drink one cup of water earlier than your morning espresso or tea to set the tone for the day.
- Hold water inside attain. Refill a reusable bottle and convey it with you. Sip all through the day as an alternative of gulping unexpectedly.
- Eat your fluids, too. Add water-rich meals like cucumbers, watermelon, and broth-based soups to meals and snacks.
- Be aware of caffeine and alcohol. These can contribute to fluid loss, so intention to restrict them or stability them with additional water (12).
- Hearken to your physique. In case your urine appears darker than ordinary or your eyes really feel dry, that’s your cue to seize a glass of water.
Small adjustments add up and over time, these habits could make staying hydrated really feel computerized.

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Backside Line
GLP-1 medicines is usually a highly effective device for weight administration, however in addition they convey distinctive challenges, particularly in terms of staying hydrated. (4,2). Between unintended effects that scale back urge for food and fluid consumption, and the physique’s pure indicators that may be straightforward to overlook, dehydration is an actual concern. (2)
With consciousness and small, constant habits, you possibly can assist your hydration and your total well being. Take note of your physique’s cues, intention for fluids and water-rich meals all through the day, and make hydration easy and pleasant. Bear in mind, it’s not about an ideal routine, it’s about constructing habits that work for you and protecting your physique fueled in your GLP-1 journey.
Let MyFitnessPal assist you to get began monitoring your hydration as we speak with the in-app water tracker.
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