Biomarkers · Vitamins & Endocrine

Vitamin E (Alpha-Tocopherol)

No risk curve catalogued yet.

Vitamin E (Alpha-Tocopherol) by age and sex

Each bar runs from the 5th to the 95th percentile, the darker part from the 25th to the 75th, and the tick is the median. Not a reference range or a target.

The percentiles as a table

Each row is one sex and age band: the values below which 5%, 25%, 50%, 75% and 95% of people fall (umol/L), from the survey named in the row. Not a reference range or a target.
Sex	Age	5th	25th	Median	75th	95th	n	Cycle / source
All	20-39	15.9	20.0	23.9	27.9	37.1	1,412	NHANES 2017-2018
All	40-59	18.9	24.1	28.1	33.7	45.5	1,537	NHANES 2017-2018
All	60+	19.0	24.8	30.6	37.6	56.4	1,875	NHANES 2017-2018
All	all	17.3	22.5	26.9	33.0	46.2	4,824	NHANES 2017-2018
Men	20-39	15.7	19.8	23.7	27.9	38.1	679	NHANES 2017-2018
Men	40-59	18.3	24.4	27.9	33.7	46.0	720	NHANES 2017-2018
Men	60+	17.6	23.5	28.3	34.6	55.0	950	NHANES 2017-2018
Men	all	16.9	22.0	26.2	32.0	45.7	2,349	NHANES 2017-2018
Women	20-39	15.9	20.5	24.1	27.9	36.5	733	NHANES 2017-2018
Women	40-59	19.4	24.1	28.3	33.7	45.2	817	NHANES 2017-2018
Women	60+	19.8	27.2	32.3	39.5	56.9	925	NHANES 2017-2018
Women	all	17.8	23.1	27.4	33.9	47.4	2,475	NHANES 2017-2018

What studies found when this marker was changed

They describe what happened in those study groups, not a recommendation. See all catalogued interventions.

Measured changes in Vitamin E (Alpha-Tocopherol), study by study

1 effect with a numeric size, each from one study arm: the dot is the reported change, the line its 95% interval where one was given. Study results in the groups studied, not predictions for a person.

Each row is one study: what was changed, the effect it reported on this marker, and the source.
Type	Intervention	Reported effect	Evidence	Source
supplement	Alpha-tocopherol 800 IU daily for 2 months before an Ironman-distance triathlon in trained triathletes	Plasma alpha-tocopherol 24.1 vs 13.8 umol/L (about 75% higher) with vitamin E vs placebo pre-race	RCT	Nieman DC, et al. Medicine and science in sports and exercise. 2004. Vitamin E…

Sources

See the catalogue entry in the research dashboard.