Interesting. This makes it likely that shiitake extract is the type of mushroom used in mushroom seasoning or takii. Most products just say "mushroom powder" and "mushroom extract". Some products list "shiitake powder" and "mushroom extract". I can find no product listing the type of extract used.

Edit: The linked table shows dried shiitake has the highest guanylate and glutamate of the listed mushrooms. Given that the website is about umami generally, this dramatically increases the odds that it is shiitake extract used in said products. It implies that dried shiitake may be the most umami mushroom (though no other dried mushroom is listed).

Interesting that the diet group worked better. I'd like to see if it's statistically significantly better than the drug group. It's also worth asking whether sodium was the only important dietary change, or if avoiding sodium caused many other dietary improvements.

Fascinating. Neck circumference suggests that sodium intake may indeed be the significant dietary factor. The recommended diet wasn't even very restricted in sodium.

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That sounds incredibly high to me. 3000 mg is the absolute maximum intake that could ever be considered 'low' sodium. Under 1500 is usually considered ideal. Would, then, a diet aiming for half the sodium be twice as effective?

The question remains, then, for the general population with SA.

I suspect it also plays a role in UARS. This study probably selected people with heart failure because the fluid retention leads to a more dramatic response. Hypertension was likely a neccesary ethical consideration. Hypotension is common in UARS; therefore, one is unlikely to find a study administering diuretics to UARS patients. That leaves correlation as the only tool available to confirm this suspicion.