Back in 2011, I covered an animal study linking vitamin K to cognitive health and another study linking arterial calcification (a result of low vitamin K status) to dementia. Now here is another study showing K's potential brain benefits.
Data from 320 participants in the Québec Longitudinal Study on Nutrition and Successful Aging (NuAge), researchers found that higher plasma phylloquinone (vitamin K1) levels were associated with better verbal episodic memory performance, including the 20-minute delayed free recall trials (but no links were found between phylloquinone levels and other measures of cognitive function).
"Episodic memory" is the memory of events within a space-time context (for example, remembering where you left your iPhone), so it's an aspect of cognition important to everyday life.
As for the potential mechanism, the researchers stated that “the vitamin K-dependent proteins Gas6 (growth arrest-specific gene 6) and protein S are expressed in the central nervous system. Protein S is notably known to possess neuroprotective effects during hypoxic/ischemic injury, whereas Gas6 is now recognized as an important regulator of cell survival, cell growth, and myelination processes.
Furthermore, vitamin K participates in the metabolism of sphingolipids, a major constituent of the myelin sheath and neuronal membranes, also involved in important molecular events such as cell signaling.
So if you haven't been taking vitamin K yet, click HERE and subscribe to Know Guff before you forget where you put your iPhone, iPad, laptop, or whatever you're using to read this.
Source: Vitamin K status and cognitive function in healthy older adults
Related posts on vitamin K:
- Studies Confirm Vitamin K for Bone & Cardio Benefits
- K2 (as MK-7) Improves Bone Health in Latest Study
- Study Reveals MK-7 is the Best Form of Vitamin K2
- Vitamin K Reduces Diabetes Risk
- Human Study Suggests Vitamin K2 (as MK-7) REVERSES Arterial Calcification
- Administration of Oral Vitamin K2 to Newborns
- Vitamin K May Improve Cognitive Health in the Elderly
- Arterial Calcification Linked to Dementia
- High Blood Sugar Linked to Dementia
- Common "Butter Flavour" Linked to Alzheimer's Disease
- Exercise Benefits Cognitive Health
- Coffee Can Help Prevent Alzheimer's Disease
- Omega-3s for Alzheimer's Disease Prevention
- CoQ10 a Potential Therapy for Alzheimer's Disease