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Homocysteine

Homocysteine is a biomarker of cardiovascular disease, and it is thought that higher circulating levels of homocysteine are indicative of a higher risk for cardiovascular incidents.

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Human Effect Matrix

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The Human Effect Matrix looks at human studies to tell you what supplements affect Homocysteine.

Full details on all Homocysteine supplements are available to Examine members.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Supplement Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
Notes
grade-b Strong Very High See all 9 studies
Betaine (3g or more) appears to potently and reliable reduce homocysteine concentrations following a single dose and maintaining this reduction for as long as supplementation is continued. The magnitude is around 10% in persons with normal homocysteine levels, and greater (20-40%) in those with high homocysteine, and (unlike folate) works in instances of methionine loading tests. 500mg betaine can reduce homocysteine after a methionine load, but it too low to influence fasting homocysteine.
grade-b Notable Moderate See all 5 studies
Homocysteine appears to be reduced to a large degree at 1.6mg, but this effect is exclusive to subjects with a specific genetic mutation known as MTHFR 677TT (two copies of MTHFR 677C->T).
grade-c Minor - See study
Somewhat high acute spike of homocysteine, which is normally a negative thing. Practical significance of this unknown

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