yeah, nuts are good for zinc and potassium, i wasn't aware they were good for magnesium, but it makes sense

i would eat more all kinds of things but they simply are not available anywhere near me on madeira... even in the centre of the capital city here it's hard to find things, but i could not live near there

i would guess that kidney is good for health of the kidney... liver is nice, it's just hard to eat a lot of it and it's better boiled than fried... it makes a nice addition to a mince, about 10-20% liver in mince and it is sooo much more tasty

but anyhow, potassium, in particular, is a thing in plants, that's what the K stands for in NPK... it's the weakest link when you have a chronic dehydration issue, caused by excessive consumption of diuretics (eg alcohol, caffeine, sugars)