Under-Eye Puffiness

Dark circles under the eyes are a different condition from puffiness and are less likely to respond to topical caffeine. Eye-related signs should be treated as clues that require proper testing rather than standalone diagnoses. Kidney filtration damage can allow protein to leak from blood into urine. Loss of protein into urine can lower blood protein levels. Lower blood protein can let fluid move into surrounding tissues and appear first as puffiness around the eyes. Caffeine applied under the eye constricts blood vessels and reduces fluid accumulation in the delicate periorbital tissue. Topical caffeine reduces eye puffiness through vasoconstriction and improved circulation in the periorbital tissue. Excess carbohydrate intake drives insulin-mediated fluid retention and systemic inflammation that manifests as eye puffiness. Puffy eyes are presented as one of the strongest visible clues of kidney issues. A ketogenic diet combined with intermittent fasting sustainably eliminates eye puffiness by removing the root carbohydrate-driven cause.