9 Tishrei, 5774
Yes, you need to speak with your rabbi and doctor if you are concerned about fasting. Do it soon, Yom Kipur begins within hours.
Need to know more about Yom Kipur? Aish.com has that for you at http://www.aish.com/h/hh/yom-kippur/guide/Yom-Kippur-Infographic.html
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