Why don't you qualify for food like foodstamps? Is your income too high? Apply at the Dept of Transitional Assistance in your area. Medical help- you should be getting medicare or some free one if you're disabled.
Christmas presents- there are programs like at food banks where you can sign up for a gift voucher,,may be too late by now but look into your local food bank, you'll need a leter from a social worker- or therapist, anyone..to go to food bank hope this helps. also see my hub