Type 2 diabetes and high blood pressure: what to know

High blood glucose can gradually affect blood-vessel walls, while raised pressure makes the heart pump against greater resistance. Together, they can increase the chance of kidney damage and cardiovascular problems, including heart failure, angina, stroke or a transient ischaemic attack. High blood pressure may cause no noticeable symptoms, so a normal-feeling day does not show whether treatment is working.

Your clinician may review blood pressure readings, glucose results, kidney blood tests and urine tests together. Weight, sleep quality and medicines can also influence both conditions; obesity and obstructive sleep apnoea may be relevant contributors.

Take prescribed medicines on the schedule agreed with your clinician, and do not stop a blood-pressure tablet because a reading improves. Keep a record of home readings if requested, including when they were taken and any symptoms. Meals built around vegetables, fibre-rich carbohydrates and suitable protein can support glucose control; limiting salty packaged foods may help blood pressure. Regular activity should match your fitness and medical advice. Attend planned checks for eyes, feet, kidneys and cardiovascular risk.

Seek emergency help for chest pressure, severe breathlessness, fainting, sudden weakness or numbness on one side, new trouble speaking, or sudden vision loss. Contact your diabetes team promptly for repeated very high or very low readings, vomiting that prevents medicines or fluids, marked swelling, or much less urine than usual.

Ask which home readings matter, how often your kidneys and urine should be checked, whether any medicine needs adjustment, and what activity or meal changes fit your other conditions.