pulmonary tb in the lungs is contagious it spreads when a person who has active tb breathes out air that has the tb bacteria in it and then another person breathes in the bacteria from the air an infected person releases even more bacteria when he or she does things like cough or laugh
An ideal bowel movement is medium brown, the color of plain cardboard. Stool that is pale or grey may be caused by insufficient bile output due to conditions such as gallstones, hepatitis, chronic pancreatitis, or cirrhosis. Bile salts from the liver give stool its brownish color.
Poop is black... The color could signal some sort of internal bleeding high in your GI tract, says Charles Austin, health educator, fitness coach, and author of The Toilet Book. According to Austin, the blood is darker than the usual red hue because it has been processed and moved through the digestive system along with the rest of your food.