Ask a doc: 'When should I worry about heart palpitations?'

Most of us have had that unsettling sensation when our heart seems to flutter or “skip” a beat — but when heart palpitations start happening more frequently, you may wonder if it’s something to get checked out. Dr. Bradley Serwer, a cardiologist

Ask a doc: 'How can I prevent high cholesterol?'

Cholesterol has some important jobs in the body — such as creating hormones, aiding digestion, building cell membranes and generating vitamin D — but too much of the waxy substance can pose a health risk. “Cholesterol only becomes problematic when cholesterol levels