Excessive calcium in the blood, known as hypercalcemia, can disrupt the heart’s electrical system, potentially leading to an irregular heartbeat or arrhythmia. Hypercalcemia is more likely to cause a ...

DEAR DR. ROACH: I have been diagnosed with vitamin D toxicity, according to the blood work from a month ago -- my result was 122 ng/mL. I was taking high doses of vitamin D3 in pill form (15,000 IU a ...

Medically reviewed by Qin Rao, MD Key Takeaways If you don't get enough calcium, you might feel muscle cramps and aches. ...

Medically reviewed by Jamie Johnson, RDN Key Takeaways Too much vitamin D can lead to harmful health effects, including high ...

DEAR DR. ROACH: I am a 62-year-old white male who is 5 feet, 11 inches tall and weighs 205 pounds. I have diabetes, high blood pressure and high cholesterol. I was recently diagnosed with “moderate to ...

The coronary artery supplies blood to the heart. If calcium builds up in the coronary artery, it can lead to coronary artery disease and increase a person’s risk of a heart attack. Calcium is the most ...

Q: My husband is 72 and had his thyroid gland removed 45 years ago. They also removed his parathyroid glands. Now his calcium level falls so low that doctors panic. Twice he has been to the emergency ...

Dear Dr. Donohue • I am a 48-year-old female whose physician is puzzled as to why my blood work shows low calcium in spite of my taking four Calcium 600 plus vitamin D pills per day. — P.W. Answer • ...