An Expanding
Selection: Comparing dairy and non-dairy milk
by: Madeleine Russell
UVM MSD Student
“Drink milk for strong bones!” is a phrase many of us have
heard from childhood. Milk, known as an all-star calcium source, is also an
excellent source of protein and vitamins. But it is becoming more common to see
non-dairy milks on store shelves: soy, rice, almond, coconut, hemp, etc. Some
individuals turn to these because they are sensitive to lactose in cow’s milk.
Others seek a more plant-based diet. With so many choices, it is difficult to
understand the differences between them. Let’s take a look at how non-dairy
milk products compare to cow’s milk.
Non-dairy milks are not known for calcium in the way that
cow’s milk is; however, most of them can have up to the same amount or more
once calcium is added to them. This is often done to make the nutrient content “match”
cow’s milk more closely. The calcium in cow’s milk is easily absorbed by the
body. Luckily, the supplemental form added to non-dairy milk is also easily
absorbed, which means that you don’t have to miss out on calcium even if you
choose to go dairy-free.
After cow’s milk, the beverage with the highest protein
content is soy milk. Soy protein is similar to cow’s milk protein in that it
has all the essential building blocks, also known as essential amino acids,
needed by your body to build new proteins. Other non-dairy milks have very
little protein, and do not supply the same set of amino acids. In this case,
the bulk of dietary protein will have to come from other foods.
To increase overall nutrition, many producers add extra
vitamins to milk and non-dairy milk. Cow’s milk naturally has vitamin B12, but
this is only found in animal products, so non-dairy makers must add B12.
Vitamins A and D are also added to many types of milk, including cow’s milk.
Put simply, because of its high protein content, soy milk is
most similar to cow’s milk. However, the others have levels of calcium, and
vitamins B12, A, and D that are close to cow's milk thanks to fortification
practices. Any of these options fits into a well-rounded diet. Just be aware
that you may have to look for additional sources of nutrients, particularly
protein, to receive the greatest benefits from your choices.
References:
A buyer’s guide to milk alternatives. Eating Well
website. http://www.eatingwell.com/healthy_cooking/healthy_cooking_101/shopping_cooking_guides/a_buyer_s_guide_to_milk_part_ii.
Accessed August 7, 2014.
Thomas J. Milk and milk alternatives: how do they compare?
Moore Family Center Blog: Oregon State University website. http://blogs.oregonstate.edu/moore/2013/02/milk-and-milk-alternatives-how-do-they-compare/.
Published February 1, 2013. Accessed August 8, 2014.