Thanks barracuda. I've been low carb, moderate protein, high good fat, for about a year. Never felt better, lost a stone and a half. Doing really well. Will do a 5 day water fast probably twice a year, then keep Mondays light, not eating before lunch, keto all week then 'feast' at the weekend. Good luck, it's an interesting journey but beware of most medical advice. Most Doctors have had zero nutritional training even though Hippocrates, the father of medicine, said 'food is medicine'. It's changing slowly. Lots of new research out there. Fat has been wrongly demonised for 50 years for instance. PJ