Anyone else on cholesterol prescriptions?

I've managed to keep my cholesterol, sugar, and blood pressure in line. It's the b12 that gets me. I have an injection I do every 2 weeks and it keeps me just above seriously low. I've had several rounds of testing and seen an endocrinologist. It's apparently just a quirk that my body thinks b12 is trash and will do a poor job of absorbing it orally. I do try to avoid the metabolic triad, since my dad and paternal grandma had all 3 and each piece increases your dementia risk. My grandma had dementia and kidney failure. My dad has the early signs of mild cognitive impairment that looks like it will progress to dementia and also had a major heart attack 2 years after failing to listen to his doctor's advice on improving his health. I'd take statins if nothing else was working, because I work in memory care and being diagnosed with dementia is my worst nightmare.