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6 causes of unexplained puffiness under eyes

Under-eye puffiness
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Under-eye puffiness
That morning puffy look bothers many people. Your eyes swell when fluid collects beneath them, tissues weaken, or inflammation kicks in. Sometimes it's harmless; sometimes it signals something worth addressing. Let's break down the real culprits.
Sleep deprivation and fatigue
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Sleep deprivation and fatigue
Skimping on sleep weakens the muscles around your eyes. Blood vessels dilate, causing swelling and darkness underneath. Poor sleep also disrupts your body's fluid balance, pooling water in the under-eye area. Collagen breaks down faster too, letting fluid accumulate more easily.
Dehydration and excess salt intake
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Dehydration and excess salt intake
When your body lacks water, it panics and holds onto every drop, including around the eyes. Eating salty foods the night before? Salt makes you retain fluid. That puffy look by morning is your body trying to keep itself hydrated by storing water in tissues.
 Allergies and histamine reactions
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Allergies and histamine reactions
Allergies trigger histamine release, inflaming the thin skin under your eyes. Dust mites, pollen, or pet dander during sleep cause swelling and redness. Allergic shiners (dark shadows) often accompany the puffiness, making your face look more exhausted than it actually feels.
(Disclaimer: This story is for educational purposes alone and should not be considered as professional medical advice and does not substitute any medical advice.)
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