Friend that had blue dye on hands from toilet all day, at night we ate burgers he took mine for a few seconds. i ate itdo i need to worry about poison?

No: What you described is not going to poison you. Hopefully your friend had washed hands thoroughly after finishing the toilet work. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, low fat milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.