Oncology Questions? Ask an Oncologist for Answers ASAP
This is Dr. David
if you are eating spicy foods or black pepper, your stools can burn when it comes out.
dark brown stools are normal and not dangerous
you might need to eat more fruits and vegetables in your diet.
you could be tasting acid reflux coming up from your stomach which can cause you to have a sore or bitter taste
sometimes you can have a small amount of blood in your phlegm or mucus you cough up from your lungs and this can be normal and be from dry air and irritation of your lungs.
smoking can cause irritation of the lungs as well
it doesn't sound like your symptoms are pointing towards cancer
let me know if you have questions.