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Archive for August 29th, 2008

My friend Adrienne said if vitamin B12 was a person, she thinks I might marry it. Maybe she’s right. I’m a big fan. Oh, I like lots of the vitamins, don’t get me wrong… love me some vitamin D for example, but you can overdose vitamin D, so you need to exercise some caution, and some feel supplementation of vitamin D can cause problems if you suffer from a autoimmune disease. As far as I know, while B12 is the only B-vitamin that seems to be stored by the body (in the liver), there are no known risks of overdose.

Where does vitamin B12 come from? It’s found in meat and dairy products. Vegans should consider vitamin B12 supplementation. Of course, my interest is in cats and if they’re fed properly (recognizing they are true carnivores) they should be getting vitamin B12 in their diet, but most commercial foods and homemade recipes supplement all the B-vitamins, just in case. The B-vitamins are water-soluble and, as I noted, generally not stored by the body, so there’s no known risk of overdose.

What can cause deficiency of Vitamin B12 in cats? Anything that causes excessive drinking and/or urination (diabetes, hyperthyroidism, kidney disease, etc.) can deplete B12 and the other B vitamins as they are “washed out” of the body. Giving sub-q fluids could deplete vitamin B. Chronic diarrhea can also deplete B12 as most B-12 is lost in fecal matter. Cats with an inflamed gastro-intestinal tract (such as cats with IBD) may not absorb B12 properly as it’s absorbed in the intestines. Vitamin B12 deficiency can cause anemia, neuropathy, other neurological issues, etc.
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