1 Having high or low cholesterol does not exclude a person from donating blood. 2  Potential blood donors may be temporarily prevented from donating if they have a low level of iron (hematocrit) in their blood.
Headline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.eadline Clickable. To keep food warm without overcooking, set your oven to the lowest temperature (which is probably 200 degrees F) and cover the food with foil.
However, to avoid bacteria build-up, you should cut up the food into pieces and store them in shallow, tight containers or tight wrap. The danger is that big soups, whole turkeys, or entire pies will retain their heat for longer. Most food can tolerate being warm for two hours.