While sitting down, my right ear suddenly went deaf and started ringing loudly for a minute. the deafness reduced mostly after a few minutes, but its still ringing slightly, should be be concerned?

What you described is likely due to wax in your ear. Put some oil in the ear to soften the wax and it may come out. You may an over the counter ear flush kit. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs. Get HPV vaccine. Wish you good health!