A clinical trial led by researchers at the Ca' Granda Ospedale Maggiore Policlinico and the University of Milan found a ...
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The Healthy @Reader's Digest on MSN8 Things Your Mucus Says About Your HealthIf your mucus is gray or black... …you likely inhaled dark-colored particles, like smoke from a fire or heavy exhaust. Regular smokers can also blow out darker mucus because of the tar or other toxic ...
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