Just finished reading Mr. Polly's book, a very good and well balanced read about Bruce's life. Although, some parts I disagree with specifically the heatstroke (hyperthermia) theory being the cause of his death.
Mainly because I have my own theory on what caused his death which I'd be willing to bet on if Bruce's remains was ever exhumed as being the real true cause.
However, overall I found it an enjoyable read and account nonetheless.
I think the best description of BL's death is that it is 'multi-factorial' or of many causes and to infer that it is (just) due to low sodium (Hyponatremia) is an over simplification. Yes, there may have been low sodium, but there may also have been a high blood urea nitrogen (BUN) which was reported as being 92 mg/dL, and thought to be a lab error, since normal is 7-20 mg/dL (milligrams per deciliter).
There is ample evidence that he was an epileptic and was not taking his dilantin (it may have a side effect that BL did not like) and indeed when you look at the presentation, loss of 20 pounds in a short period, less than 1% body fat (according to one report) it would be classed as significant anorexia.
I'm sure people have seen this report but it's worth a re-reading:
http://www.theforensicexaminer.com/2016 ... li_637.php