<s>[INST] Dear doctor,Am Monica , i experience blood in motion from past months , not continuously. Am in dubai , due to extreme hot climate i had blood in motion twice.And when i am in office inside full A/C i drink lot of Cold water and when i  go to motion i feel the pain. Is it anything serious ?? or due to heat the blood came ?? pls advice.Now the climate is getting changed from Summer to extreme winter and even now i experienced that problem. pls advise me and what foods must i avoid ?? and what is the reason for the blood. Thanks Monica [/INST] Hello and welcome to Chat Doctor, Blood in stools is not associated with hot climate or Chat Doctor. Presence of blood in stools suggests some problem in the gastrointestinal tract. Most common cause of blood in stools is infection. Infection with certain bacteria causes blood in stools. Thus, a routine stool examination is required to look for evidence of infection in the gastrointestinal tract. In case there is evidence of infection, appropriate anti-microbial can be taken. If there is no infection detected on stool examination, you need to consult your gastroenterologist for certain investigations like stool for occult blood and colonoscopy. These investigations will determine presence of any disease in the gastrointestinal tract. Thanks and take care </s>