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Calcium Supplements and Heart Health Information

Discover the link between calcium supplements and heart health. Learn about potential cardiovascular risks, the benefits of calcium, and the best ways to maintain your daily intake.

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Written by Dr. D Bhanu Prakash

Reviewed by Dr. Vasanthasree Nair MBBS

Last updated on 10th Aug, 2025

Introduction

Calcium is an essential mineral that plays a crucial role in maintaining strong bones, teeth, and proper muscle and nerve function. Many people, especially older adults and postmenopausal women, take calcium supplements to prevent osteoporosis and bone fractures. However, recent studies have raised concerns about the potential effects of calcium supplements on heart health.

If you or a loved one takes calcium supplements, it’s important to understand how they may affect your heart and what you can do to stay healthy.

How Does Calcium Affect the Heart?

Calcium is necessary for the proper functioning of the heart. It helps regulate heartbeats and ensures that muscles contract and relax effectively. However, too much calcium in the bloodstream—especially from supplements—may lead to concerns such as:

Hardening of the arteries (arterial calcification): Excess calcium can deposit in blood vessels, making them stiff and increasing the risk of heart disease.

Higher risk of heart attacks or strokes: Some studies suggest that excessive calcium supplementation (without vitamin D) may contribute to cardiovascular issues.

Should You Stop Taking Calcium Supplements?

Not necessarily. Calcium is still vital for bone health, especially for those at risk of osteoporosis. However, it’s important to take the right amount and ensure you’re getting calcium from natural food sources whenever possible.

Who Should Be Cautious?

People with a history of heart disease

Those with kidney problems

Individuals taking high doses of calcium supplements (above 1000–1200 mg per day)

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How to Safely Take Calcium for Better Heart Health?

Ways to safely take calcium for better heart health:

1. Get Calcium from Food First

The best way to meet your calcium needs is through a balanced diet. Some excellent food sources include:

Dairy products (milk, yogurt, cheese)

Leafy greens (spinach, kale, bok choy)

Fortified foods (almond milk, orange juice)

Fish with edible bones (sardines, salmon)

2. Take the Right Dosage

Adults (19–50 years): 1000 mg per day

Women over 50 & men over 70: 1200 mg per day

Upper limit: Avoid exceeding 2000–2500 mg per day from all sources (food + supplements).

3. Pair Calcium with Vitamin D

Vitamin D helps your body absorb calcium properly. If you take supplements, choose one that includes vitamin D (like calcium + D3).

4. Avoid Taking Large Doses at Once

Your body can only absorb about 500 mg of calcium at a time. If you need more, split the dose—take half in the morning and half in the evening.

5. Monitor Your Heart Health

If you have heart disease or are at risk, talk to your doctor before starting calcium supplements. Regular checkups can help monitor any potential risks.

When to See a Doctor?

If you experience any of the following symptoms, consult a healthcare professional:

Irregular heartbeat

Chest pain

Severe fatigue

Unexplained dizziness

Your doctor may recommend:

Adjusting your calcium intake

Checking vitamin D levels

Monitoring heart health through tests

Need Expert Advice?

If you’re unsure about calcium supplements and their impact on your heart, consider consulting a specialist. You can easily book a consultation or schedule a heart health checkup through Apollo 24|7 for personalized guidance.

Final Thoughts

Calcium is essential for bone health, but balance is key. Instead of relying solely on supplements, focus on a calcium-rich diet and take supplements only if needed. Always consult your doctor before making changes to your supplement routine, especially if you have heart concerns.

By making informed choices, you can support both your bones and your heart for a healthier life!

Stay healthy, stay informed! 

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