US top nutrition panel seems to think that drinking too much coffee can be healthy as their latest dietary recommendations votes for drinking coffee a bit more.

Miriam Nelson, a professor at Tufts University and one of the committee’s members, said that they saw that coffee had a lot of health benefits and specifically when one was drinking more than a couple cups per day.
Nelson felt that it was great news if one was already drinking between three and five cups each day.
According to data collected by the United States Department of Agriculture, on average, Americans only drink about one cup of coffee per day.
Source-ANI