What causes an angina despite following a strict diet?
Patient: I eat lots of salads everyday (big bowl for lunch) do not eat any fried foods at all. But recently I found breathing hard going up a hill (one that I usually run). I do not eat bread, nor do I eat red meat, yet my doctor said I just suffered angina. How is that possible? Doctor: Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice.  I would explain that it is important performing a comprehensive differential diagnosis between different possible causes that may lead to this clinical situation: chronic anemia, a lung disorder, a cardiac disorder, etc.  For this reason, I would recommend consulting with your attending physician for a physical examination and some tests to investigate for the possible causes:  - a resting ECG and a cardiac ultrasound - cardiac enzymes - a chest X-ray study and pulmonary function tests - blood electrolytes.   An exercise cardiac stress test may be needed. You should discuss with your doctor on the above tests.   Hope you will find this answer helpful!  Kind regards.