Most Americans get plenty of vitamin B12 through the food they eat, but there are some notable exceptions (older Americans are particularly at risk, because they have less intrinsic factor, with some sources saying as many as 43% may be deficient in the vitamin).
Today, most adults consume meat, largely the only source of dietary B-12. However, climate change and vegan and vegetarian enthusiasts, and now the USDA’s 2025 Dietary Guidelines tell us to stop eating meat. The effect, when applied to entire populations, without considering or educating individuals on the impacts will led to an expansion of vitamin B-12 deficiency.
From the USDA Dietary Guidelines – this is buried on page 128 of the 130 page document:
A vitamin B-12 deficiency is not a minor condition but can be extremely serious – even leading to permanent damage or even death.
- Older adults tend to absorb less dietary B-12
- Older adults often eat much less than younger adults
- Older adults ability to store B-12 in their liver may be reduced
- Older adults may have medication interactions that limit B-12 absorption
If you plan to follow the guidelines for “plant-based eating” you need to discuss with your doctor and a dietician.
