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  • JOSH K REED

Do you avoid cows milk?... Then where do you get your calcium?


Calcium is the most abundant mineral in the human body, with 99% of it stored in the bones and teeth, and around 1% circulating in the blood and tissues. On top of its role in skeletal health, calcium is required for a number of essential functions in your body, including:

  • the regulation of muscles contracting and relaxing

  • the regulation of heart function

  • involvement in blood clotting

  • involvement in the transmission of nerve signals 

Cow's milk, a rich source of calcium

This is why cows milk is rich in calcium... Plants obtain calcium from the ground, and cows eat loads of grass over the day, every day. The calcium from the consumed grass in turn ends up in the cow and its milk, which is why cows milk and related dairy products are so rich in calcium (e.g. 300mg per cup).

Therefore if you consume calcium rich dairy foods, it can be easier to meet your calcium needs.

But you can still meet your calcium needs without consuming dairy... 

Whether you avoid dairy because of digestive issues, ethical reasons, or something else, it's important to understand what you might be missing out on, as well as where to seek alternative sources of essential nutrients such as calcium. 

Plant-based milks

There are now a lot of plant-based milk alternatives on the market, such as soy, oat, almond, rice, pea coconut and macadamia milks. Although these plant milks offer unique nutrient profiles, majority are low in calcium. You must remember this!

Macadamia milk - This creamy nut milk has a higher percentage of healthy fats compared to most other plant milks. Unlike soymilk, its protein content is very low, and unless fortified, it doesn’t contain much calcium.

Almond milk - Unlike it’s pre-processed nuts, almond milk is low in calcium, protein and fibre, and although it’s low in calories, it can really only boast nutritional benefits if it has been fortified.

Oat milk - Oats contain beta-glucan, a type of soluble fibre that can contribute to improved cholesterol levels and improve heart health. Unless fortified, oat milks are very low in calcium. Unlike some of the other plant-milks, this milk is often a good alternative for those with a number of food allergies.

Coconut milk - Is high in saturated fats, the type that increase your unhealthy cholesterol. Compared to other plant milk alternatives, it falls short on the recommendation list.

Pea milk -  Most pea milks are rich in calcium and protein, as well as have a lot less sugar than other plant milks (e.g. rice and almond milks). Again, this milk alternative is really only a good source of calcium if it has been fortified.

In a nut-shell...

Most alternative plant milks are very low in calcium. However, you can purchase those that have been fortified with calcium (meaning, the mineral has been added in). If fortified, a lot of these alternative plant milks will provide similar amounts of calcium to that of cows milk.

Calcium needs

Men

  • >19 yrs old, need 1000mg calcium each day

  • >70yrs old, need 1300mg calcium each day

Women

  • 19-50yrs old, need 1000mg calcium each day

  • > 50 yrs old, need 1300mg calcium each day

Calcium absorption

On top of considering the amount of calcium you need to meet your daily requirements, it's also important to understand that their are a number of factors that affect the absorption of your calcium, as well as note that you can only absorb about 500mg of calcium at any one time. And absorption decreases with age.

Helpers for calcium absorption

Vitamin D plays a major role in calcium absorption through its role in the active calcium transporters in your gut. If you don’t get enough Vitamin D, your calcium absorption can be compromised. Vitamin D is noted as the ‘sun and seafood’ vitamin, which means you get most of it from the sun, as well obtain good amounts from seafood. In regard to plant-based sources, vitamin D can be obtained from certain mushrooms, as well some products that have been fortified with this important nutrient, including soy-products, plant-milks, plant-spreads (e.g. nuttelex).

Inhibitors of calcium absorption

Phytates, compounds found in nuts, seeds, wholegrains and bran, can reduce calcium absorption to a minor extent. This can be reduced by soaking, sprouting, leavening and fermenting the above mentioned foods.

Oxalates, another compound found in leafy greens, nuts, seeds, cocoa and fruits, may also somewhat inhibit calcium absorption. 

Other factors that affect your calcium levels

  • A high-salt diet

  • Excess coffee and tea intake (greater than 6 cups per day)

  • Excess alcohol consumption

  • Excess soft drink / soda consumption

  • Excess dietary protein

  • Not getting enough exercise

  • Not getting enough sun exposure

  • Smoking

Good sources of calcium

Dairy

  • Lite milk, yoghurt (& cheese)

  • 1 cup milk = ~300mg calcium

Plant milks

  • Soy milk and other plant based milks (fortified with calcium)

  • 1 cup = ~300mg calcium

Green leafy vegetables

e.g. broccoli, cabbage, spinach, collard greens, herbs like parsley.

  • 1 cup spinach = ~100mg calcium

  • 1 cup broccoli = ~45mg calcium

Nuts & seeds

e.g. almonds, brazil nuts, sesame seeds

  • Small handful almonds = ~40mg calcium

Other foods

  • Soy foods – tempeh & tofu (100g) = 100-300mg

  • Baked Beans (3/4cup) = 100mg

  • Salmon/sardines canned with bones (75g) = 200-300mg

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REED NUTRITION

 

6 Lawson St Byron Bay Australia NSW 2481

josh@reednutrition.com.au

0466119389