Practicing healthy habits can get confusing when something that’s supposed to help one medical condition potentially hurts another. This has been the case (and controversy) regarding taking calcium supplements to promote healthy bones.
Some researchers have identified a
While several analyses have identified potential risks of taking calcium supplements, most researchers conclude that calcium supplementation isn’t harmful. Keep reading to find out what we’ve learned about this debate.
Even researchers have a hard time agreeing on the potential effects of calcium on cardiovascular disease. Studies related to calcium and heart disease have shown conflicting results.
Sometimes, conflicting results are due to studies using different selection criteria. That means they might differ in how they study or define heart disease. For example, some studies included patients who self-reported their heart attacks. Other studies only considered those who got an official diagnosis.
To review the most recent research, we looked at new meta-analysis data. A meta-analysis looks at many studies and combines their results to see if there are patterns. Here are some results from these studies.
Researchers acknowledge there are challenges to linking calcium supplements with heart disease or heart attack risk. Many of the studies reviewed didn’t specifically relate to this topic, but instead looked at various health habits.
To be clear, researchers haven’t identified how calcium supplements may increase heart disease risk. That doesn’t mean they don’t have some ideas for potential reasons.
Calcifications in the blood vessels in the heart can build up as “plaque” (not the same as what’s on your teeth, but definitely harmful). This plaque is an early sign of heart disease and increases your risk of heart attack.
Hypocalcemia (too little calcium)
Calcium is a mineral naturally present in your bones. As you age, you’re at greater risk of a bone-thinning disease called osteoporosis. If you don’t get enough calcium (about
Ideally, doctors hope that increasing calcium in your daily diet makes you
The following are some commonly asked questions about calcium and health.
In a word, no. Unless you have a health condition where your doctor has specifically told you to reduce daily calcium, you shouldn’t reduce your calcium intake.
Your body needs calcium to complete a number of functions, including building healthy bones. Low calcium intakes and levels may also increase your risk of death.
The International Osteoporosis Foundation recommends different calcium intakes based on your age. As you get older, your body is less able to absorb calcium into your bones. This means that you need more calcium as you age.
Dairy products don’t have to be your only daily calcium source. Other foods that have calcium include:
Food manufacturers may also fortify (add) calcium into other foods, such as bread, cereals, and juice.
The research will continue on calcium supplementation and heart attack risks. However, no research has definitively proven that calcium supplements are harmful, and some studies have found positive heart-health effects associated with taking them.
Talk with a doctor about how calcium supplements could benefit your health and if you should have any concerns given your health history.
Last medically reviewed on April 22, 2022
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