2. Mild Fluid Retention and Puffiness
Your kidneys maintain precise fluid and sodium balance throughout your body. When functional capacity declines, your body retains excess fluid and sodium, leading to subtle localized swelling known as edema. Clinicians often look for persistent puffiness around your eyes, particularly in the morning. You might also notice that your socks leave deep impressions on your ankles at the end of the day or that your shoes feel unusually tight.
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