And there was me thinking it was my diet! The symptoms started a few weeks after I started lchf in January, and I've tried eating more fat, less fat, more carbs, fewer carbs, more protein less protein, more salt, more water, nothing made a difference, still feeling weak, dizzy, light-headed, lethargic, no appetite etc. I've been losing weight slowly for the last year or so without trying, and a lot more since lchf. I thought it was because of my high BG, but apparently not. I went for my regular 3 month check up at the hospital today and they said my kidney function had reduced markedly in the last couple of months, and they said I was showing all the signs of renal failure. My sister has been on dialysis for 4 years and I'd been thinking about checking her symptoms with her, but I wasn't overly overworried because I knew she'd had bad headaches for months before being diagnosed end stage renal failure (when she didn't even know she had a problem with her kidneys!) but I've had very few headaches. So, they don't know what's causing it yet, I've got to go back on Monday for a scan and biopsy, and they took another arnful of blood from me today. The hope is it's something that can be sorted, but they didn't sound too hopeful. They said I'm not bad enough to need dialysis yet, my kidneys are working at about 30%, but apart from that they can't say any more at preent until they've done more tests. Good news was my A1C has gone down again, to 60, so that was some comfort. i don't know if it's affected by the kidneys though. So much I don't know at the moment!