Sore, Swollen, or Bleeding Gums
Sore, swollen, or bleeding gums are symptoms not only of periodontal disease — in which exposure to bacteria causes the gums to become inflamed and pull away from the teeth — but also a possible early sign of underlying cardiovascular disease.
Puffy or Swollen Legs or Feet
If you notice that your feet swell enough to make your shoes tight; your ankles, wrists, or fingers are noticeably puffy; or there are deep pressure marks or indents when you take off socks or hose, you may have a problem with fluid retention. Also called edema, fluid retention can be a sign of coronary artery disease (CAD), heart failure, and other forms of cardiovascular disease.
Irregular Heartbeat or Arrhythmia
An early sign that something in the cardiovascular system is out of whack is irregular heartbeat, or arrhythmia. It may feel like your heart is skipping beats, beating too fast, or pounding too hard.
Read more: 7 Surprising Signs of an Unhealthy Heart