The extra vitamin Ok [structural formula on the right] you eat by way of your food regimen, the much less seemingly you’re to die from a coronary heart assault or most cancers. Spanish epidemiologists made this discovery after following 7216 individuals over the age of 55 for 5 years. The researchers imagine that elevating your vitamin Ok consumption is without doubt one of the extra wise issues you are able to do to increase your lifespan.
Vitamin Ok isn’t just one substance, however a bunch of compounds that may be divided roughly talking into two subgroups: vitamin K1 – aka phylloquinone – and vitamin K2 – aka menaquinone. Vitamin K1 is present in greens, particularly curly kale and spinach; vitamin K2 is discovered primarily in fermented meals akin to cheese, quark, yoghurt and natto.
The physique wants vitamin Ok for the enzyme gamma-glutamyl-carboxylase to have the ability to do its work. This enzyme is concerned in bone constructing, but in addition in preserving the partitions of the blood vessels supple. Epidemiologists have reported that individuals who eat giant quantities of vitamin K2 are much less more likely to develop heart problems. [Nutr Metab Cardiovasc Dis. 2009 Sep;19(7):504-10.]
Vitamin Ok can also be concerned within the strategy of blood coagulation. Anti-coagulant medicines typically work by deactivating vitamin Ok.
As well as, vitamin Ok seems to inhibit most cancers cells. A excessive vitamin K2 consumption additionally decreased the prospect of prostate most cancers by nearly half within the EPIC research [Am J Clin Nutr. 2008 Apr;87(4):985-92.], and in addition decreased the prospect of dying from most cancers typically. [Am J Clin Nutr. 2010 May;91(5):1348-58.]
Of their article within the Journal of Diet the Spaniards additionally write that their research – which concerned 7216 over 55s in danger from heart problems – confirmed that vitamin Ok protects towards heart problems. The researchers divided their members into 4 teams, based mostly on their vitamin K1 and K2 consumption and noticed that mortality was decrease within the group with the best consumption [Q4] than within the different teams.
The correlation was strongest with the K1 consumption [below left], however there was additionally a correlation, albeit much less robust, with vitamin K2 [below].
When the researchers had corrected for the whole lot they may consider – together with vegetable consumption – they found excessive vitamin K2 consumption [in Q4 the average intake was 57.5 mcg/day] decreased the chance of dying from most cancers, however that the discount was not statistically vital. Vitamin K2 had no impact on whole mortality danger.
The protecting impact of vitamin K1 was extra convincing. A excessive vitamin K1 consumption [in Q4 the average intake was 626.4 mcg/day] decreased the chance of dying from most cancers, and the impact was statistically vital.
The discount within the chance of creating heart problems because of a excessive vitamin K1 consumption was not vital, however the impact on whole mortality danger was.
The researchers seemed on the impact of modifications in vitamin Ok consumption. The desk under reveals that a rise in each vitamin K1 and K2 consumption nearly halved all-cause mortality.
“Our outcomes recommend that the dietary consumption of each energetic types of vitamin Ok has a possible protecting position in cardiovascular mortality, most cancers mortality, and all-cause mortality in a cohort of Mediterranean people at excessive heart problems danger with a comparatively excessive consumption of this vitamin”, the researchers conclude.
Dietary consumption of vitamin Ok is inversely related to mortality danger.
Vitamin Ok has been associated to heart problems and most cancers danger. Nonetheless, information on whole mortality are scarce. The intention of the current research was to evaluate the affiliation between the dietary consumption of various kinds of vitamin Ok and mortality in a Mediterranean inhabitants at excessive heart problems danger. A potential cohort evaluation was carried out in 7216 members from the PREDIMED (Prevención con Dieta Mediterránea) research (median follow-up of four.eight y). Power and nutrient intakes had been evaluated utilizing a validated 137-item meals frequency questionnaire. Dietary vitamin Ok consumption was calculated yearly utilizing the USDA meals composition database and different printed sources. Deaths had been ascertained by an end-point adjudication committee unaware of the dietary habits of members after that they had reviewed medical data and linked as much as the Nationwide Demise Index. Cox proportional hazard fashions had been fitted to evaluate the RR of mortality. Power-adjusted baseline dietary phylloquinone consumption was inversely related to a considerably decreased danger of most cancers and all-cause mortality after controlling for potential confounders (HR: zero.54; 95% CI: zero.30, zero.96; and HR: zero.64; 95% CI: zero.45, zero.90, respectively). In longitudinal assessments, people who elevated their consumption of phylloquinone or menaquinone throughout follow-up had a decrease danger of most cancers (HR: zero.64; 95% CI: zero.43, zero.95; and HR: zero.41; 95% CI: zero.26, zero.64, respectively) and all-cause mortality (HR: zero.57; 95% CI: zero.44, zero.73; and HR: zero.55; 95% CI: zero.42, zero.73, respectively) than people who decreased or didn’t change their consumption. Additionally, people who elevated their consumption of dietary phylloquinone had a decrease danger of cardiovascular mortality danger (HR: zero.52; 95% CI: zero.31, zero.86). Nonetheless, no affiliation between modifications in menaquinone consumption and cardiovascular mortality was noticed (HR: zero.76; 95% CI: zero.44, 1.29). A rise in dietary consumption of vitamin Ok is related to a decreased danger of cardiovascular, most cancers, or all-cause mortality in a Mediterranean inhabitants at excessive heart problems danger. This trial was registered at http://www.controlled-trials.com as ISRCTN35739639.
PMID: 24647393 DOI: 10.3945/jn.113.187740 [Indexed for MEDLINE]