Your body runs different in summer

Your supplements need a summer update

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June 19, 2026 10:28am EDT

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Casa de Sante

Gut-Friendly Nutrition

Digestive Health|Protein Powders|GLP-1 Support|Hormone Balance

Summer Is Draining Your Nutrients Faster Than You Think

Casa de Sante • Physician Insight

Summer Is Quietly Draining Nutrients Your GLP-1 Body Can't Spare

A new 22,167-record analysis shows exactly what heat does to your bloodwork, and why plain water won't fix it.

+219%

Low Magnesium
vs. Winter

+59%

Low Sodium
vs. Winter

-17%

Iron Levels
Drop

+25%

Dehydration
Marker

I ran bloodwork on a patient last week who'd been on her GLP-1 medication since January. Everything looked solid in March. By June, her magnesium had dropped below normal range. She hadn't changed anything. But the season had.

A health analysis of 22,167 checkup records published this month found that summer heat shifts key biomarkers most people never track. The reason is simple: you lose magnesium and sodium through sweat, and plain water doesn't replace either one. Add a GLP-1 medication that suppresses thirst cues and reduces food intake, and the gap widens fast.

What The Clinical Review Recommends

Multivitamin daily to cover calcium, iron, magnesium, potassium, and vitamins A, C, D, and E. Dietary intake alone falls well below recommended levels in this population.

Protein at 1.2 to 2.0 g per kg body weight, split across meals, not loaded at dinner. A gut friendly protein powder fills the gap when appetite makes a full meal feel impossible.

Fiber above 10 g per day for at least 4 weeks, with extra water. Psyllium is the best studied option for GLP-1 constipation.

Source: Clinical review, PMC, September 2025.

My Weekend Setup For Patients Heading Into Summer

Start a daily multivitamin if you haven't. Our GLP-1 Daily Nutrition Companion covers the micronutrients that drop fastest on GLP-1 medications, formulated to be gentle on sensitive stomachs.

Front-load protein before noon. A shake at breakfast plus protein at lunch gets you to 60 to 70% of your daily target before appetite fades in the evening.

Set a hydration reminder. Your thirst signal is dulled. Aim for 64 oz minimum, and add electrolytes on days above 85°F.

Featured For This Season

GLP-1 Daily Nutrition Companion

Calcium, iron, magnesium, potassium, and vitamins A, C, D, and E, formulated gentle on sensitive GLP-1 stomachs. Pairs with our Starter Bundles for full summer coverage.

Shop Essential Nutrition →

If you're building your summer routine from scratch, the Starter Bundles pair the multivitamin with gut support and protein so you're not piecing it together product by product.

Summer changes what your body burns through. Your routine should change with it.

Dr. Onikepe Adegbola, MD PhD

Founder, Casa de Sante