Safdar N, Andes D, Craig WA (2004) In vivo pharmacodynamic activity of daptomycin
B12 deficiency can affect individuals of all ages, but most particularly elderly individuals, as older adults are more likely to have decreased stomach acid production, which is necessary for B12 absorption and they easily develop vitamin B12 deficiency
The agency's enforcement posture toward peptide research compounds has intensified since 2020, with multiple warning letters issued to suppliers marketing unapproved peptides directly to consumers
There are several causes of vitamin B12 deficiency, including: Insufficient Intake : People who follow a vegetarian or vegan diet may be at risk of vitamin B12 deficiency because the main dietary sources of the vitamin are animal products, such as meat, fish, poultry, eggs, and dairy products
Similarly, a cross-sectional study conducted in a HIC, reported no correlations between DHA levels and measures of processing speed or executive function, regardless of age, sex, or educational level (73)