As far as hyponatraemia goes and its correlation with a low metabolism (sodium wasting) I had an idea.
Even with cutting fluids I struggle to maintain colour in the urine, although I haven’t managed to cut fluids completely as I get thirsty, but have milk and OJ.
I was thinking of doing a few 8-9% solution IV drips to build blood volume and increase salinity, but this could be expensive.
So I thought that for the same reason enemas aren’t a good idea because the bowel absorbs a lot of water I figured you could put about 200 grams of salt into 500 mls of water and do an enema with that, which would mean absorbing plenty of salt.
b very careful. I basically did something similar with hypertonic solutions and screwed myself to the point where I dont know if I can even recover now. Id stick with just eating really salty solid foods.
Note in the article: “Rapid correction of the serum sodium by more than 12 mmol/d should be avoided because of the risk of osmotic demyelination”
A google of ‘osmotic demyelination’ suggests you really, really do NOT want to subject yourself to that!
If real food is not enough to provide you the results you want, I would suggest you seek professional advice from a doctor, as there could be some serious underlying conditions (thyroid, and kidney problems come to mind).