glutathione and type 2 diabetes Changes in levels in testis tissue. T2DM, type-2 The Roles of Glutathione and
Description
Conditions like celiac or Crohn's disease can impair B12 absorption

There are also medication options that may be available to you, especially if your late period is because of a hormone imbalance

DOI: 10.3390/biomedicines10123048 70

Psychiatry 67 , 139145 (2010)

Stationary phase persister/biofilm microcolony of Borrelia burgdorferi causes more severe disease in a mouse model of Lyme arthritis: implications for understanding persistence, Post-treatment Lyme Disease Syndrome (PTLDS), and treatment failure