Yes nutrition plays a large role in how we stay heart healthy.
Electrical activity of the heart depends on normal levels of magnesium, calcium, potassium and sodium. A deficiency or excess of any one of these may cause conduction abnormalities. These can be identified with tests checking urea and electrolytes, serum calcium and red cell magnesium.
Excessive caffeine in the diet may also cause conduction abnormalities. The main sources are to be found in coffee, tea, coca cola and chocolate. Thirdly, food allergies may also cause rhythm abnormalities.
Stress is another cause of irregular heart beats or bursts of tachycardia.
I am a huge caffeine drinker and I know when I have gone overboard. So look at your nutrition carefully.
Take care :)
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You are family now, so keep on posting.