I've done 2 degrees, 1 before diabetes, second a year or so after diagnosis. I really can't say diabetes made much difference, but different cities (Newcastle upon Tyne / London) and different degrees (BSc / MSc) did.
Whatever your situation, university is an amazing time to make the most of all opportunities. Not just opportunities offered by university, both academic and sports / interests / activities etc but also getting to know a new place to live, new jobs etc. I improved my nordic skiing, did lots of fell walking, did a sea survival course, worked as a bank nurse and TA nursing officer, transport surveyor, relief international student hostel warden over new year, heard Tony Ben speak, watched lots of films, drank lots of beer, wrote sports reports and film reviews for student newspaper etc - sometimes several things in the same day.
Perhaps I'm an exception, but didn't get freshers' flu.