I had a bunch of blood test recently done which tested me for AIDS/HEP C and another blood disorder my dad has and wanted to see if i also had the genes for it but thankfully came up negative for all 3 of those. Which was good considering I was a IV heroin user and who knows until you get tested. Anyways I did come back with bad test results about my Vitamin D levels, which the doctor said was very low. I'm wondering what this being very low would effect in my body? What causes low vitamin d levels? I do not have a good diet and havnt eaten breakfast in at least 10 years due to not waking up early. I probally consume on a average day around 1200 or less calories and I am 6 foot 138 pds. Due to the fact I have no money, food and choice of foods is very limited to me at the moment. I have started to take a multivitamin daily, will that help and in what way? How do i raise my vitamiin d levels and what do they effect? Input appreiciated!!