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What makes milk so hydrating?
Milk vs. Water for Hydration
The surprising finding was discovered via a study that compared hydration from different beverages by analyzing fluid retention levels in the hours after drinking. Shockingly, both milk and skim milk were found to be among the most hydrating beverages—even surpassing mineral water in some conditions.
How is this possible? The explanation can be found in the nutritional composition of milk . Milk contains natural sugars, proteins, and fats,” the study notes. “These nutrients slow the emptying of the stomach, helping the body retain fluids longer.
What makes milk so hydrating?
As Real Nutrition, milk has a protein and nutritional profile that helps the body retain water. Here’s a deeper look at makes milk more hydrating than water:
- Milk has a high electrolyte content (including sodium and potassium , which helps the body retain fluids.
- Milk contains protein and carbohydrates, which slow digestion, prolonging the presence of water in the body.
- Milk balances osmolarity, which promotes water absorption by cells.
- Milk has sodium, which is especially helpful in retaining more of the water you drink.
Should we be drinking milk instead of water?
This is not to say that we should all be filling our Stanleys with milk instead of water; H20 still remains the most recommended drink under normal conditions, and experts recommend drinking at least 8 ounces a day. Milk is a helpful hydration tool, not a replacement. Milk comes with calories, saturated fat (depending on the type), and natural sugar that water doesn’t. So drinking large volumes of it the way you would water isn’t realistic or nutritionally ideal.
The research indicates that there are times when milk can be more effective for hydrating.
- After strenuous physical activity, to replenish fluids and nutrients.
- For children and the elderly to promote more complete hydration.
- In periods of mild dehydration, when fluids need to be better retained.
The milk as a smart hydration boost in specific moments. Plain water should still be your baseline.
