01/05/2021
When I was in university studying nutrition, it was ingrained in us that it was essential to eat dairy to get enough calcium. We would have representatives from the dairy industry come and talk to our classes of 300+ students about the importance of dairy, and we even visited local dairy farms for Agricultural Science class.
"What about plant based sources like broccoli and tahini?" I would ask, the professor would respond with "well you'd have to eat 10 cups of broccoli a day"*
This was over 10 years ago, so I am hoping there is more dialogue in university nutrition programs about meeting calcium needs from plant foods now, especially since approx. 65% of the population is actually lactose intolerant. Also, higher milk consumption does not seem to lower the risk of bone fractures, but it does seem to be associated with higher rates of cancer.
So, how can we meet our calcium needs on a plant based diet? Do we have to eat cups of broccoli all day? Is it something vegans even need to worry about?
The RDA of calcium for adults 19-50 years old is 1000mg per day. For children 9-18 years old it is 1300mg, and for adults over 50 years old is it 1200mg.
When you start looking at the calcium content of your favourite plant foods, it may first seem difficult to reach 1000mg each day.
Incorporating fortified plant milks is a great way to increase your calcium intake, as one cup provides about 300-400mg.
Calcium-set tofu is another great source of calcium. It provides about 250mg per 1/2 cup serving, but do check the labels as the calcium amount does vary.
When it comes to dark leafy greens, the amount of calcium we are able to absorb depends on the amount of oxalates in the greens.
For spinach, beet greens, and Swiss chard, only about 5-10% of the calcium in is absorbed.
With lower oxalate greens like kale, broccoli, Chinese greens, turnip greens, and mustard greens, the absorption of calcium is between 50-65%. Collards can be considered a good source as well, even though they are slightly higher in oxalates....
If you'd like to read the full article & check out the amount of calcium in some of these greens the link is in my bio 🌱