Thanks for the advice and i hope you have fully recovered from your health issues.
We only use non fluoride toothpaste, mostly Desert Essence brand with tea tree oil, or Xylitol from Now. We eat occasional sweets and don't drink soft drinks or anything that has artificial sweeteners or has the word "diet" on its label.
Usually afib is caused by different underlying issues. In my wife's case it's calcified mitral valve. My guess is that her problem is created by mercury and poison coming from her dental work. She has 2 root canals and a lot of crowns and bridges.
She is going for a hair analysis next week and we will know more. Our goal is to get her of warfarin and other medications she is taking in favor of natural alternatives.
I will mention to her about meditation, thanks for mentioning it.