Frequent signs are 1/ Tightness, squeezing, pressure or an ache in the chest, 2/ Sometimes a sudden breathing difficulty, 3/ Chest pain similar to indigestion (heart burn), 4/ A choking feeling, 5/ Chest pain that radiates to the jaw, teeth or earlobes, 6/ Heaviness, numbness, tingling or ache in the chest, arm, shoulder, elbow or hand usually on the left side and 7/ Pain between the shoulder blades.

CAD can have 1/ partial blockage or spasm of the arteries that supply blood to the heart, 2/ An overactive thyroid gland, 3/ A heart rate that is too fast.4/ Heart-valve disease and sometimes anemia is involved.

Risk of heart attack increases with: 1/ Smoking, 2/ obesity, 3/ diabetes mellitus, 4/ High blood pressure, 5/ High blood cholesterol levels, 6/ Ex-cess intake of fat or salt, 7/ Sedentary lifestyle, fatigue, overwork or stress, 8/ Family history of CAD and 9/ Exposure to cold and wind.

The famous treatment is by nitroglycerin that acts instantly against pain. Many other drugs are used including the statins that lower cholesterol levels.