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Am I Getting Enough Calcium?

Nov 30, 20 6 min
Am I Getting Enough Calcium? - Natalist

Calcium is the most abundant mineral in the body, but many of us don’t meet the recommended amount through diet. This guide discusses the importance of calcium and how much you need during TTC and pregnancy.

By Dr. Kenosha Gleaton

What is calcium?

Calcium is the most abundant mineral in the body and is key in the formation of bones and teeth, nerve conduction, intracellular signaling, and muscle function. Most calcium you consume is stored in bones and teeth, where it supports their structure and hardness. The body also needs calcium for muscles to move and for nerves to carry messages between the brain and the rest of the body. In addition, calcium is used to help blood vessels move blood throughout the body and to help release hormones and enzymes that affect almost every function in the human body. Wow, that’s a lot of jobs for one mineral!

How much calcium do I need when trying to conceive or pregnant?

Calcium supplementation during pregnancy ensures that you can meet the demands of your growing baby. It is recommended that all adults aged 19-50 consume 1,000 mg of calcium per day. That amount is the same for all pregnant women, except pregnant teens, who should get 1,300 mg of calcium per day. The best way to meet the recommended intake is through your diet. But how do you know if you’re consuming enough calcium?

Here are some common foods and their calcium content:

  • One cup of yogurt = 350 mg 
  • Three ounces of canned sardines = 325 mg
  • One cup of milk = 300 mg
  • One ounce of cheddar cheese = 200 mg
  • One slice of pizza = 120 mg 
  • Half cup of ice cream = 60 mg
  • Half cup cottage cheese = 60 mg
  • Two tortillas = 53 mg
  • One cup of broccoli = 50 mg
  • One slice of bread = 20 mg

As you can see from this list, many of the foods high in calcium are dairy products. But what if you’re vegan? Suitable sources of calcium would include green vegetables like spinach leaves, green cabbage, fennel, and broccoli, as well as soy milk, nuts, calcium-rich mineral water, and food products that are fortified with calcium.

Does my prenatal have enough calcium?

Pregnant women absorb calcium more effectively than non-pregnant women, especially during the last half of pregnancy when fetal demands on maternal calcium are greatest. However, the Dietary Guidelines Scientific Report estimated that almost a quarter of pregnant women in the United States consume less than 800 mg per day. 

How much calcium to look for in a prenatal depends on how much calcium you are consuming through your diet. If you are a vegan or think you may not be reaching the 1,000 mg/day recommendation, then look for a prenatal that has at least 100 mg of Calcium. 

Note that no prenatal will meet 100% of your recommended intake. Most prenatals have low amounts of calcium because calcium may interfere with iron absorption. If you need to take a separate calcium supplement, it is recommended to take it at a different time from your prenatal vitamin. 

Additionally, if you are taking a separate calcium supplement, it’s best to take it in doses under 500 mg at a time. This is because the amount of calcium that is absorbed in your body decreases as the amount of calcium increases. For example, if your doctor advises you to take 1,000 mg/day of calcium in a supplement, you might split the dose and take 500 mg at two separate times during the day.

🌟 Shop the Natalist Prenatal Daily Packets⟶

Calcium deficiency

Low calcium intake often does not cause symptoms, until it’s too late. But if levels are low for too long, you may experience symptoms like

  • Dry skin
  • Brittle nails
  • Coarse hair
  • Muscle cramps in the back and legs 

The medical term for a calcium deficiency is hypocalcemia. If untreated over time, it can cause 

neurological or psychological symptoms such as memory loss, delirium, depression, and hallucinations. 

If you are concerned about a calcium deficiency, your doctor can order a blood test to measure calcium levels. The good news is that calcium deficiency is easy to treat, and symptoms disappear when the calcium level is restored back to normal. 

Calcium carbonate vs. citrate

The two main forms of calcium in supplements are carbonate and citrate.

  • Calcium carbonate is the most common and affordable type of calcium supplement. Because calcium carbonate depends on stomach acid for absorption, it should be taken with food.
  • Calcium citrate is absorbed equally well when taken with or without food. Calcium citrate is also useful for people with low levels of stomach acid, inflammatory bowel disease, or gastric absorption disorders. And for everyone with pregnancy-induced nausea, vomiting, and queasiness, Calcium citrate is less likely to cause side effects like gas, bloating, or constipation.

We chose to use calcium citrate in the Natalist Prenatal Daily Packs, because it’s less likely to cause side effects. 

Why calcium is important during pregnancy

Women who don’t get enough calcium (<500 mg/day) may be at risk for increased bone turnover during pregnancy. Without enough calcium, the body steals it from the bones which leads to bone loss. But adequate calcium intake is associated with improved calcium balance, providing a protective effect against bone loss during pregnancy.

Research shows that calcium supplementation in pregnancy has the potential to decrease the risk of developing hypertensive disorders during pregnancy, which are associated with preterm birth, the leading cause of early neonatal and infant mortality.

Additionally, a systematic review of 13 clinical trials involving 15,730 pregnant women concluded that pregnant women consuming low amounts of calcium could reduce their risk of preeclampsia by 31–65% if they consumed an additional 1,000 mg of calcium each day. The study found good quality evidence that calcium supplementation with high doses (>1,000 mg/day) during pregnancy is a safe and relatively cheap way of reducing the risk of preeclampsia. Although extremely encouraging, more studies are needed to confirm these findings. 

Take-aways

  • Calcium is a natural mineral found in many foods that is vital to your health, especially when pregnant.
  • All adults aged 19-50 should consume 1,000 mg of calcium per day. This amount is the same for all pregnant women, except pregnant teens, who should get 1,300 mg of calcium per day.
  • If your diet doesn’t contain enough calcium, you should talk to your doctor about taking a supplement.
  • No prenatal will meet 100% of your recommended intake, but look for one with at least 150 mg to help supplement your diet.
  • Look for calcium citrate, which has fewer side effects and can be taken with or without food.

Featured Image by Daria Shevstova

 

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