By Sheila AshThe American Red Cross says blood supplies typically run low this time of year and is asking people to take time from their busy holiday schedules to donate. Spokesperson Theresa Kuhlmann says all blood types are needed."Especially around the holidays you’ll see that there’ll be a greater need for type O negative and the reason for that is that is that it is the universal blood type. It can be used in all situations and I’m thinking primarily of trauma situations," she said. Kuhlmann says to give blood you must be 17 years of age or 16 with parental permission and weigh at least 110 pounds.Numerous holiday blood drives in Louisville will be held December 1st through the 15th. For more information, click here.