Human microbiome and metabolic health: an overview of systematic reviews
Medical supervision : Peptides affect hormones, metabolism, and cellular function
SSRIs and tricyclics elevate KYNA by upregulating KAT expression in astrocytes and reduce 3-HK through downregulation of KMO [196]
The beetroot enhances skin radiance and is rich in vitamin C for brightening, antioxidants that fight skin dullness, detoxifies the skin for a healthier glow, supports collagen production for firmness and glow, reduces inflammation and improves skin texture, improves blood circulation for a healthy glow, hydrates the skin, and fades dark circles and tired skin
If you think that's the case, I have to say that unless you're very lucky in having a GP who knows something about B12 deficiency, you may have to think about adding the extra yourself (sublinguals, patches, drops or self-injecting)