The N-methylhistamine is further broken down with the MAO-B enzyme, forming N -methylimidazole acetaldehyde.[ref] Histamine (from body cells) [HNMT enzyme] N-methylhistamine [MAO-B enzyme] N-methylimidazole acetaldehyde Note that the HNMT enzyme (histamine N-methyltransferase) facilitates the transfer of a methyl group in the breakdown of histamine through this pathway
When to Seek Medical Advice About B12 Levels Knowing when to consult your GP about vitamin B12 concernswhether related to deficiency or potential excessensures appropriate investigation and management whilst avoiding unnecessary anxiety
You can also get it from certain supplements if youre looking to increase your intake
GLP-1s have become first-line therapy for type 2 diabetes Traditionally, the first-line treatment for newly diagnosed type 2 diabetes has been inexpensive generics, but that is changing

Eligibility criteria for NHS-funded GLP-1 treatment for weight management include: For semaglutide (Wegovy): BMI 35 kg/m (or 32.5 kg/m for people from South Asian, Chinese, other Asian, Middle Eastern, Black African, or African-Caribbean backgrounds) with at least one weight-related comorbidity For liraglutide (Saxenda): Similar BMI criteria as defined in NICE TA664 Evidence of previous weight management attempts through lifestyle modification Treatment must be initiated within specialist weight management services (Tier 3) Time-limited use as specified in the relevant NICE guidance The referral pathway typically involves: Initial GP consultation: Discuss weight concerns, document BMI and comorbidities, and review previous weight management efforts Tier 2/3 weight management services: Many areas require participation in structured lifestyle programmes before pharmacological intervention Specialist assessment: Referral to specialist weight management services for treatment initiation Ongoing monitoring: Regular review to assess response, tolerability, and continuation criteria Treatment continuation requires achieving the weight loss thresholds specified in the product-specific NICE guidance and SmPCs

This value is subjective and varies by individual