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Calcium, Vitamin D, and Exercise: The Bone Building Team

two girls drinking milk

Keeping your growing bones strong and healthy is important. Good nutrition and exercise can help prevent bones from getting weak. Calcium and vitamin D are two important nutrients that help build strong and healthy bones.

Why calcium?

Almost all the calcium found in the body is in your bones and teeth. Calcium is also found in the blood, where it plays many important roles in the body.

Your bones are like a bank. The calcium that you eat is put into the bone bank. The bone bank donates calcium to your blood to make sure blood levels always stay normal. If you do not eat enough calcium, the bone bank will become empty. It is very important to eat lots of calcium-rich foods to keep blood levels up while keeping your bone bank full and strong!

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Why vitamin D?

Like calcium, vitamin D is very important for growing bones. It helps your body to absorb the calcium that comes from your food.

Vitamin D is also known as the "sunshine vitamin." Your body can make vitamin D with the help of the sun. Ten to 15 minutes a day in the sun without sunscreen during summer will provide you with the vitamin D you need.

But getting vitamin D from food and supplements is also important. It can be hard to get enough sun time when staying indoors, in the winter time and in the summer when wearing sunscreen. Sunscreen blocks the vitamin D made from the sun.

Vitamin D deficiency has been reported in some communities, especially among children.

You may not be getting enough vitamin D if:

  • You have dark skin. Dark skin has more melanin, which interferes with vitamin D production.
  • You live in a northern community. These communities go through long periods with little sunshine.

Please note that regardless of skin colour or where you live, dietary needs for vitamin D are the same.

Very few foods contain enough vitamin D and so a vitamin D supplement may be needed. Further down the page, there is a list of foods high in vitamin D. To find out how much vitamin D you need, read the table below and talk to your doctor, nurse, pharmacist, or dietitian as well.

Your dietitian may recommend a higher amount of vitamin D based on your medical condition and the medications you are taking.

Your dietitian recommends your daily vitamin D intake be:               IU

 

How much calcium and vitamin D do I need every day?

This table lists the recommended daily amount of calcium and vitamin D children and teens should get each day. Calcium is measured in milligrams (mg) and vitamin D is measured in International Units (IU).

Age

Elemental calcium

Vitamin D

1 to 3 years

700 mg

600 IU

4 to 8 years

1000 mg

600 IU

9 to 18 years

1300 mg

600 IU

Great high calcium ideas:

  • Use milk instead of water when making soup or oatmeal.
  • Make "smoothies" using yogurt, fruit, and milk.
  • Try chocolate- or strawberry-flavoured milk.
  • Try calcium-fortified orange juice.
  • Dip fresh fruit into yogurt or veggies into cheese dip.
  • Offer yogurt or pudding for a dessert or snack.
  • Stock up on calcium-rich snacks such as cheese cubes, yogurt, tortillas, cereal with milk, and almonds.
  • Try cooked soybeans (lightly salted).
  • Add shredded cheese to tortillas, soup, and stew.

Food sources of calcium

Challenge of the day: Place a check mark next to the ones you tried and liked! Try to eat a variety of those foods each day.

Helpful Hint: Be sure to look at the serving sizes listed to know how much calcium you are eating.

Excellent choices: Foods with 200 to 300 mg of calcium per serving

Food

Serving size

Calcium (mg)

Milk (whole, 2%, 1%, skim), chocolate milk, or lactose-free milk

1 cup (250 ml)

300

Calcium-fortified soy milk, such as Silk or So Good

1 cup (250 ml)

300

Orange juice fortified with calcium, such as Tropicana with Calcium or President’s Choice with Calcium

1 cup (250 ml)

300

Soybeans, cooked (sometimes called Edamame)

2 cups (500 ml)

350

Soybeans, roasted

1 cup (250 ml)

240

Yogurt, such as Danone’s Fruit on the bottom

170 g (1 container)

200

Very good choices: Foods with 100 to 200 mg of calcium per serving

Food Serving Calcium (mg)

Cheddar cheese

1 oz (size of thumb)

200

Mozzarella, Colby, or marble cheese

1 oz (28 g)

150

Cheese string

¾ oz (21 g) stick

150

Cheddar, processed spread (Cheez Whiz)

2 tbsp (30 ml)

180

Cream soups, such as cream of mushroom, broccoli, or chicken, prepared with milk

1 cup (250 ml))

170

Salmon, canned with bones

3 oz (85 g)

190

Sardines

4 medium (3 oz or 92 g)

250

Processed cheese slices

2 slices

150 to 200

Pancakes or waffles made with milk

3

140

Yoplait Yop yogurt drink

200 ml (1)

200

Petit Danone Drinkable yogurt, such as Danimals

93 ml or 100 g (1 serving)

100

Minigo or Petite Danone

60 g (1 serving)

150

Tofu, firm made with calcium

1/4 cup (3 1/2 oz)

125

Pudding, chocolate or vanilla

1/2 cup (99 g)

105 to 120

Almonds

1/4 cup (60 ml)

100

Almond butter (100% crushed almonds)

2 ½ tbsp (35 ml)

80

Hazelnuts, brazil nuts

1/2 cup (125 ml)

110

Cereal fortified with calcium, eg. Golden Grahams, Honey Nut Cheerios

3/4 cup (175 ml)

100

Frozen yogurt, plain soft serve

1/2 cup (125 ml)

100

Molasses, blackstrap

1 tbsp (15 ml)

170

Good choices: Foods with up to 100 mg of calcium per serving

Food

Serving

Calcium (mg)

Kraft Dinner, original (macaroni and cheese)

1/2 cup (125 ml)

200 

Ice cream

1/2 cup (125 ml)

85

Figs, dried

3 figs

80

Orange

1 medium

55

Parmesan cheese

1 tbsp (15 ml)

55

Yoplait Tubes stirred yogurt

 60g (1 tube)

60

Pancakes or waffles, frozen

2

40

Tahini (sesame seed butter)

1 tbsp (15 ml)

60

Broccoli, cooked

1/2 cup (125 ml)

40

Kale, cooked

1/4 cup (60 ml)

45

Tortilla chips

12 chips (50 g)

60

Corn tortilla

1, 6-inch (25 g)

40

Molasses, regular

1 tbsp (15 ml)

40

Cream cheese

1 tbsp (15 ml)

20

Food sources of Vitamin D

The foods listed in this table are excellent sources of Vitamin D.

Food

Serving

Vitamin D (IU)

Salmon, canned, pink

1 oz (28 g)

130 to 215

Egg (yolk)

1

20

Milk

1 cup (250 ml)

100

Orange juice fortified with vitanin D such as Minute Maid

1 cup (250 ml)

100

Fortified soy or rice beverage such as Silk or So Good

1 cup  (250 ml)

100

Tuna, canned, light

1 oz (28 g)

70

Fortified margarine

2 tsp (10 ml)

60

Sardines

1 oz (28 g)

75

Calcium supplements

While it is best to get calcium from food, sometimes supplements are needed. Be sure to talk to your doctor, dietitian or pharmacist before beginning any supplementation. Let them know about any other medication you are taking.

For the best effects:

  • Make sure calcium supplements are not taken at the same time as other medicine. The calcium may make other medications less effective. For example, calcium can make it hard for the body to absorb iron and antibiotics.
  • Take no more than 500 mg of elemental calcium at one time.

What else can I do?

Limit pop or soda to once a day. Instead, drink milk, a milk fruit smoothie, or calcium fortified orange juice.

Like muscles, bones get stronger when we use them. Any kind of a weight-bearing activity is great! This is any exercise in which our feet and legs carry our weight. Walking, jogging, dancing, stair climbing, and skating are some ways to build your bones. Be sure to talk to your doctor about other activity ideas that are best for you.

You and your family

Your family can help you build strong bones by building strong bones too!

You and your family can:

  • Share calcium-rich foods at family meals.
  • Drink milk with every meal.
  • Eat calcium-rich snacks.
  • Get plenty of exercise.

 

Stacey Segal, MSc, RD

Esther Assor, RD

Kellie Welch, RD

Jennifer Buccino, MEd, RD, CDE

 2/14/2011