 [ Symptoms ] veins are not visible for the blood test what to do  my mom is 61 years old and in every few months she have a blood test her veins are not much visible so the doctors have to pierce at many places can anybody suggest what exercise she can do so the veins becomes more or easily be visible or is there any food which she can take before blood test i do not want her to suffer the pain of piercing at different places any help will be appreciated thanks [ Disease ] this is not to be neglected a brain mri and eeg are strongly recommend