The Baptist preacher and retired lecturer was diagnosed when he was 17, just before going to university when he fell into a diabetic coma. Dr Dann said: “I was weak, I was tired, I was thin, I didn’t know what was wrong with me until I collapsed. The doctor sent me to Llandough Hospital, and I was there for three weeks. My parents were told I may not survive. But I pulled through. Diabetes management was completely different then. The…