10.1038/s41433-020-01391-z Kennedy RD, Spafford MM, Parkinson CM, Fong GT: Knowledge about the relationship between smoking and blindness in Canada, the United States, the United Kingdom, and Australia: results from the International Tobacco Control Four-Country Project
Common causes include liver disease (which releases stored B12), kidney disease (reducing B12 clearance), haematological malignancies, solid tumours, and excessive supplementation
Scientifically, that line leans more into metabolic efficiency and blood-flow support
Some teas such as peppermint or ginger have been traditionally used to sooth digestive issues, but whether or not tea consumption leads to increased GERD (gastroesophageal reflux disease) symptoms is still up for debate
Most studies have focused on comparing the toxic ingredients of different tobacco products
Guidelines: Vitamin A supplementation in infants and children 659 months of age