Calcium is a tricky beast:
-- If you get over 250% of your recommended daily allowance, your body can OD on it.
-- If you don't get enough, your bones, teeth and muscles will suffer.
-- You can only absorb up to 60% of your recommended daily allowance at a time
-- You need Vitamin D to absorb calcium.
So, with all of that in mind, what are the best ways to get calcium?
You can use supplements -- like TUMS -- but the best source of vitamins and nutrients is food.
If you're an omnivore, dairy makes a lot of sense. Don't overdo it, and don't consume dairy (primarily) through high fat sources -- like full fat cheeses -- but in moderation, even full fat cheese is fine.