I am heavy coffee drinker (5 cups/day) but now am planning to start a family. What is the optimum amount of healthy caffeine intake for me? Pls suggest.

Maybe cut down a cup or two? About 400 mg of caffeine a day appears to be safe for most healthy adults, which is about 4 cups of brewed coffee. I was a heavy coffee drinker too but I have since cut back to about a cup a day and when I feel the urge for a caffeine fix, I turn to green tea instead.