Try for free with code SEE4FREE Â». Allergy-related sinus congestion can lead to dizziness or a more severe type of dizziness called vertigo. Keep reading to learn what causes your allergy-related dizziness, and how to treat it.
Report Abuse. Brown. Feces are mostly shades of brown or yellow because they are also made up of an orange-yellow substance called bilirubin that is present throughout the body and particularly in the intestine. When iron combines with bilirubin, it gives it a brown color.eport Abuse. Brown. Feces are mostly shades of brown or yellow because they are also made up of an orange-yellow substance called bilirubin that is present throughout the body and particularly in the intestine. When iron combines with bilirubin, it gives it a brown color.
Importantly, the bile is also a route for excretion of cholesterol and bile pigments. Bile pigments are metabolic breakdown products of hemoglobin and cytochromes that give bile its yellow-green color. Bile pigments are further metabolized by bacteria in the colon, causing feces to have a characteristic brown color.