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.
If a recipe calls for a low oven, you need to set the temperature around 125 degrees Celsius. This temperature is perfect for long slow cooking, especially for tenderising tough cuts of meat. A medium oven means a temperature of around 180 degrees Celsius.This is a good temperature to choose if you are not sure of the temperature you need. This temperature will work well for everything from pies to cakes and even pasta bakes. A high oven means a temperature of around 230 degrees Celsius.his is a good temperature to choose if you are not sure of the temperature you need. This temperature will work well for everything from pies to cakes and even pasta bakes. A high oven means a temperature of around 230 degrees Celsius.