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Arizona (Dignity Health) Aug 25, 2026 2 mins read

Arizona Extreme Heat Poses Dehydration Risks for GLP 1 Users

Arizona's prolonged extreme heat poses added dehydration risks for GLP 1 patients. Discover essential daily habits to stay hydrated and safe.

“GLP-1 medications can make it easier to overlook your body's normal hunger and thirst cues. That's why I encourage patients to make hydration part of their daily routine, especially in Arizona where heat can continue well into the fall.”
Shawn Stevenson, DO, chief of foregut and bariatric surgery - Dignity Health Medical Group

 

(Chandler, Ariz. – Aug 25, 2026) – As Arizona’s triple-digit temperatures stretch beyond summer and into fall, a Dignity Health weight loss specialist is warning patients taking GLP-1 medications to use extra precautions against dehydration. The Valley’s normal September high is still above 100 degrees, and its last 100-degree day typically occurs in  early October according to the National Weather Service. This extends heat-related risks well beyond the traditional summer months.

GLP-1 medications, which continue to surge in popularity for weight loss, can commonly reduce appetite and thirst cues. Some patients may also experience side effects such as nausea or vomiting, making it more difficult to stay hydrated. Combined with Arizona’s extreme heat and excessive sweating, those factors can increase the risk of dehydration and other serious heat-related illnesses. 

"Weight loss should never come at the expense of hydration," said Shawn Stevenson, DO, a chief of foregut and bariatric surgery with the Dignity Health Medical Group. "GLP-1 medications can make it easier to overlook your body's normal hunger and thirst cues. That's why I encourage patients to make hydration part of their daily routine, especially in Arizona where heat can continue well into the fall."

Dehydration can lead to symptoms including dizziness, headaches, fatigue, muscle cramps and a rapid heartbeat. In severe cases, it can contribute to heat exhaustion or heatstroke which can be life-threatening. 

Dr. Stevenson recommends patients taking GLP-1 medications during the summer:

  • Drink fluids constantly throughout the day instead of waiting until you feel thirsty.

  • Replace electrolytes when appropriate, especially after heavy sweating.

  • Watch for early signs of dehydration.

  • Avoid outdoor activity during the hottest part of the day whenever possible.

  • Talk with your doctor  if side effects become severe to adjust your treatment plan.

"These medications can be life-changing for many patients, but they work best when they're paired with healthy habits," said Dr. Stevenson. "Hydration isn't optional. It's an essential part of staying healthy, preventing  heat-related illness and getting the most out of your treatment."

Learn more about the care provided by Dignity Health Medical Group or schedule a visit with your weight loss specialist to discuss your medication management.