by Aurelia » Tue Mar 09, 2010 12:45 pm
Hi Sam,
There are two seriously conflicting schools of thought on dairy products. The traditional view sees them as a very important part of a healthy diet and essential for maintaining good calcium levels. The opposing view says they greatly increase the risk of cancer and several other serious illnesses, so it is better to obtain calcium from other sources. (For more details, I would suggest googling “The China Diet” and reading articles for and against.)
Cathy, thanks for those great links for non-dairy sources of calcium. I was pleased to see two useful comments warning that although spinach contains plenty of calcium, it also contain oxalates, which prevent calcium absorption. (The same is true of Swiss chard aka silver beet.) Also, one I hadn't read before, that the body cannot absorb more than 300-400 mg of calcium at once, “so if you take a supplement, take it at a different time than you eat a high calcium meal”.
Other points:
Brazil nuts do contain calcium, but rather than 12, I think the general advice is to have only 3 or 4 per day.
To make best use of calcium, we need good levels of Vitamin D, whether from supplementation or sun exposure.
Some other good sources of calcium include:
sardines (325 mg per 3 ounces)
oysters (195 mg per cup)
refried beans (188 mg per cup)
salmon (150 mg or 180 mg per 3 ounces - have seen both quoted and I don't know which is correct)
Agar (a seaweed alternative to gelatine) has 625 mg of calcium per 3.5 oz, and can easily be added to foods as a thickener, as well as used for making jellies and other desserts. In some countries, orange juice can be bought fortified with agar specifically to boost calcium levels.
Kind regards,
Aurelia