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Scientists have delved into the mystery of bellybutton lint, revealing surprising findings. Analysis of over 500 samples showed lint contains house dust, skin cells, sweat, and fabric fibers. Abdominal hair seems to play a role, and studies suggest being male and having an “innie” contribute to lint buildup. A mechanical engineer even explained the physics behind lint production. Remember, basic hygiene practices apply, and any discomfort should be discussed with a doctor.
