Supplement your diet with biotin capsules. That would help and you can take a lot of it without getting sick or overdosing. I’ve known people who have had success in reversing thinning hair with biotin supplementation.
Also, if you aren’t doing so already, start taking a green powder supplement daily. VerdiSyn is hard to beat for this. Garden of Life Perfect Food Super Green Formula is another good green powder. A tablespoon of a green powder a day in water or juice (preferably the former, without sugar) will ensure that you are getting all the B-Vitamins that you need in your diet, as well as some essential enzymes and minerals as well.

By the way, you are right to avoid meat as much as possible and to only eat organic meat once in a while (if at all). The antibiotics, hormones, and other additives injected in regular meat plays havoc on the body, and makes one fat from the hormones, among other things. Not to mention the fact that meat is also hard to break down and often goes undigested for long periods of time, especially among big meat eaters. Pork, pork sausage, and ham should especially be avoided completely, as these are very hard to digest – not even taking into account all the other problems, like the nitrates and nitrites added.

Also, get a lot of iron in your diet, the best method is through supplements (multivit tablets). If you suffer from dandruff as well, try a 2% ketoconazole medicated shampoo and maybe take an antifungal tablet once a week (get it prescribed by a doctor). You could also try elocon (it’s a very safe steroidal lotion).