How has the direction from the FDS caused harm?
People have died following their direction and then the direction has changed.
Blood rules; organ transplants come to mind very quickly
Blood see http://quotes.jehovahswitnesses.com/blood.htm
Trandsplants see http://quotes.jehovahswitnesses.com/transplant.htm
Different rules for different countries
Mexico and Malawi come first to mind. While men in Mexico were allowed to bribe officials to get a card saying they had served their military time, people in Malawi were been hunted down and murdered because they were told to refuse to buy a one-party political card for the equivalent of 25 cents.
See Crisis of Conscience by Ray Franz (or do a search here)
Time of the end 1975
They did predict it contrary to what they now claim. Believing the end was a matter of months or weeks away many people refused to seek needed medical treatments.
See http://quotes.jehovahswitnesses.com/1975.htm
Please note that if you are new at looking for some of the medical flip-flops you will have to seek out the original copies of the literature because the bound volumes, second printings of books and the WT-CDs have been edited to delete the references