At 16:06 -0500 19/1/03, Alex Shvartsman wrote:

>Can anyone estimate how much sardines/ leafy greens we need to consume to
>reach 1500 mg of calcium (and magnesium, for that matter)

All figures are per 100 grams of the food, from USDA database.

Sardines: 382 mg calcium, 39 mg magnesium
Swiss chard: 51 mg calcium, 81 mg magnesium
Spinach: 99 mg calcium, 79 mg magnesium

So, leafy greens appear to be a more balanced supply of calcium
and magnesium than sardines.

Some other good sources of magnesium:

dried pumpkin seeds: 43 mg calcium, 535 mg magnesium
dried watermelon seeds: 54 mg calcium, 515 mg magnesium
flax seeds: 199 mg calcium, 362 mg magnesium
mixed nuts, unsalted: 70 mg calcium, 225 mg magnesium

(All nuts seem to be pretty good, so I included mixed nuts rather
than 10 individual nuts.)

 ...R.