Can constipation cause infections

Patient: I have been living in Saudi arabia for 9 months and suffering from constipation for the last 7 of them.i have just been to the doctors to find i have now got my third infection (a respiratory one this time), since i have been here.could the the two be linked ? the doctors just treat the infection in isolation , but are they missing the underlying cause – which could be the constipation.

Doctor: