davidhealey
USDA Vitamin K value is sometimes incorrect
Compare the following USDA items:
- https://fdc.nal.usda.gov/food-details/170690/nutrients
- https://fdc.nal.usda.gov/food-details/170691/nutrients
The first one reports the following
- Vitamin K (phylloquinone) 3.82 µg
The second one reports the following:
- Vitamin K (phylloquinone) 6.98 µg
- Vitamin K (Dihydrophylloquinone) 0.254 µg
However, waistline reports 3.82 µg for the first one, but only 0.254 µg for the second one, which is inconsistent. I suspect the correct solution is to add the two numbers, but I'm not familiar with this vitamin.
Phylloquinone is the chemical commonly known as vitamin K. Dihydrophylloquinone is the hydrolyzed form and commonly found in processed foods. Phylloquinone has a positive effect on some health pointers, while Dihydrophylloquinone is believed to have negative effects. Thus, it is debatable if the values should be combined. There is also Menaquinones, a form of vitamin K that is limited to animal products.
src:
- https://www.sciencedirect.com/science/article/pii/S0022316622095761
- https://pubmed.ncbi.nlm.nih.gov/17684225/
- https://www.ars.usda.gov/ARSUserFiles/80400525/Articles/jfca16_595-603.pdf
