An anterior rolling walker has a ground support frame, a vertical riser assembly, a torso support assembly and an actuator apparatus which allows a user to raise the torso support assembly from a first lowered position to a second raised position, and to anyone of a plurality of positions there between. The lift mechanism utilizes a single telescoping riser assembly which is positioned offset from the front of the walker, such that there is minimal structure to the front of the user, allowing the user to ambulate directly to (and make physical contact with) tables, desks, refrigerators, loved ones, and the like.