Thanks OL - I'm not diabetic but do have PCOS so I am insulin resistant. I'm not really sure what you mean about my hydration - I've been drinking, what I'm told and what seems to be the right amount.

CL - No, its happening hot or cool.

Amy - Thanks very much. This is very interesting to me about your sister - she clearly is very motivated. I've been doing a bit of on-line research and if I could get in with my doctor I might try to see her (although she's booked).