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
Pathogenic genetic variants in one of three genes encoding for amyloid precursor protein ( APP ), presenilin-1 or presenilin-2 lead to a form of the disease known as early-onset familial AD, which accounts for 510% of AD cases 1
What are those overlapping principles
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