Vitamin E (Tocopherols): The ICMR-NIN Figure, Indian Nuts, Seeds and Oils, and the Capsule Trials

Vitamin E is the name for a family of fat-soluble compounds, the tocopherols and tocotrienols, of which alpha-tocopherol is the one the body keeps and uses. Its main job is to stop the polyunsaturated fats in cell membranes from being oxidised. ICMR-NIN's Nutrient Requirements for Indians 2020 does not give a table by age; it suggests 0.8 mg of alpha-tocopherol for each gram of essential fatty acids in the diet, which it says works out at roughly 7.5 to 10 mg a day. This entry in the vitamins section of the handbook covers the figure, the Indian foods and oils that supply it, and the capsule trials.

What is vitamin E and what does it do?

It is the body's main fat-soluble antioxidant, and it has to come from food. The FAO/WHO expert consultation on vitamin and mineral requirements describes its major role as protecting polyunsaturated fatty acids, other parts of cell membranes and low-density lipoprotein from oxidation by free radicals. It sits inside the membrane itself, at about one molecule for every 2,000 phospholipid molecules, which the consultation takes as a sign that it is quickly regenerated after each reaction.

Because it dissolves in fat, vitamin E is absorbed the way dietary fat is, with the help of bile and pancreatic secretions. ICMR-NIN's Dietary Guidelines for Indians 2024 make the same point from the kitchen side: fats carry vitamins A, D, E and K and promote their absorption. Blood levels are hard to push up. In the consultation's account, supplements of about 1,600 IU a day for three weeks raised plasma levels only two to three times, and the levels fell back within five days of stopping.

Tocopherols, tocotrienols and the IU on a label

Plants make eight forms: four tocopherols and four tocotrienols, each labelled alpha, beta, gamma or delta. They are not equal. On the FAO/WHO scale, with natural alpha-tocopherol at 100 per cent, beta-tocopherol has 50 per cent of the activity, gamma-tocopherol 10 per cent and alpha-tocotrienol 30 per cent. The Indian Food Composition Tables 2017 report every form separately but note that only alpha-tocopherol is now counted towards vitamin E activity. Food figures in this entry are alpha-tocopherol alone.

Supplements usually carry a synthetic form, dl-alpha-tocopherol, a mixture of eight stereoisomers that the consultation counts at 0.74 of the natural form. Labels often use international units. One milligram of synthetic alpha-tocopheryl acetate equals 1 IU, so a 400 IU capsule of that compound holds 400 mg, some 40 to 53 times the 7.5 to 10 mg that ICMR-NIN suggests for a day. The related fats are covered in the handbook's entry on omega-6 fatty acids.

How much vitamin E do you need in India?

An adult needs roughly 7.5 to 10 mg of alpha-tocopherol a day on ICMR-NIN's 2020 report, which ties the need to fat intake at 0.8 mg per gram of essential fatty acids and adds that the figure depends on the edible oil used. Divide the range by 0.8 and it corresponds to about 9 to 12.5 g of essential fatty acids. The report gives no separate values for children, pregnancy or lactation, so the table sets its figure beside those of the FAO/WHO consultation, each labelled.

The FAO/WHO consultation was candid about how soft these numbers are. It found the data insufficient to set recommended intakes by age, apart from infancy, and declined to base any figure on protection against chronic disease. For pregnancy and lactation it saw no evidence of a need different from other adults. ICMR-NIN's practical advice is correspondingly plain: eat at least 500 g of fruit and vegetables a day for the other antioxidant nutrients, and complement them with enough vegetable oil to obtain vitamin E.

Which Indian foods supply the most vitamin E?

Nuts and oilseeds lead, with almonds, pistachios, sunflower seeds and safflower seeds far ahead of everything else the Indian Food Composition Tables 2017 analysed. The table converts the alpha-tocopherol values per 100 g into household portions. The site's vitamin E table of Indian foods ranks every food that has a value, so only a selection appears here.

Not every nut is a good source. Walnut, at 2.65 mg per 100 g, carries about a tenth of what almonds hold in the food tables, a gap set out in the comparison of almond and walnut. Sesame is modest at 1.08 mg per 100 g, and cow's milk has only 0.14 mg. The 2024 guidelines' model plate for a 2,000 kcal vegetarian day includes 35 g of nuts and seeds and 27 g of fats and oils, and those two lines supply most of a day's vitamin E.

Why does your cooking oil matter so much?

Oil is a leading source, about half of the alpha-tocopherol in the British diet the FAO/WHO consultation analysed, and oils differ by a factor of almost a hundred. That is why ICMR-NIN's figure is a range that depends on the edible oil used. The Indian tables give the fatty acids of twelve oils but no tocopherol values for them, so the table below uses the figures printed in the FAO/WHO consultation, which come from a 1971 analysis and not from Indian samples. Read them as a guide to rank.

Soyabean oil shows why the form matters: it has 59.3 mg of gamma-tocopherol per 100 g but only 10.1 mg of the alpha form that counts. The FAO/WHO table has no line for mustard, sesame or rice bran oil, and no figure for them is given here. The 2024 guidelines add that refining alters these minor components even though it leaves the fatty acids unchanged. The food tables' page on sunflower oil gives its fatty acid profile.

Too little: deficiency and who is at risk in India

Deficiency from diet alone is rare. The FAO/WHO consultation records that clinical signs usually develop only in adults with fat malabsorption or liver disease, in people with inherited faults in the proteins that transport vitamin E, and possibly in premature infants. The signs are muscular and neurological, with red blood cells that break down more easily, and they can take several years of very low levels to appear.

No Indian document read for this entry reports a national figure for vitamin E status: the surveys that track anaemia, vitamin A and vitamin D do not measure it. What can be said is where intake is likely to be lowest, which is on plates with very little added fat, no nuts or oilseeds, and an oil that carries little alpha-tocopherol.

What does the evidence say about vitamin E supplements?

The evidence is large, mostly from randomised trials, and it runs against the capsules. A 2005 meta-analysis of 19 trials with 135,967 participants found that in the 11 trials using 400 IU a day or more, deaths from any cause rose by 39 per 10,000 people, while the low-dose trials showed no such rise. Its authors noted that the high-dose trials were often small and in people with chronic disease. A Cochrane review of antioxidant supplements, updated in 2012, put the relative risk of death with vitamin E at 1.03 across 46 trials at low risk of bias.

Single trials point the same way. In the American trial known as SELECT, 35,533 healthy men were randomised, and those given 400 IU a day had a hazard ratio for prostate cancer of 1.17, an absolute increase of 1.6 cases per 1,000 person-years. In the extended HOPE trial of older patients with vascular disease or diabetes, 400 IU a day for a median of seven years did not prevent cancer or major cardiovascular events, and the relative risk of heart failure was 1.13.

Stroke shows a trade-off. A meta-analysis in the BMJ of nine trials with 118,765 participants found no effect on total stroke, because a 10 per cent fall in ischaemic stroke was set against a 22 per cent rise in haemorrhagic stroke, the bleeding kind: one extra bleed for every 1,250 people taking vitamin E. The United States Preventive Services Task Force concluded in 2022, with moderate certainty, that there is no net benefit, and recommends against vitamin E supplements for preventing cardiovascular disease or cancer.

A worked example: one day's vitamin E in Pune

This is an illustration, not a real person. Take a 29-year-old vegetarian graphic designer in Pune whose household cooks in groundnut oil. Across the day she eats about 20 g of that oil (2.6 mg on the FAO/WHO figure), a fistful of 30 g of peanuts in her poha (1.3 mg) and 100 g of palak in the dal (1.3 mg). That comes to about 5.1 mg of alpha-tocopherol, short of the 7.5 mg at the lower end of ICMR-NIN's range.

Nothing in this example calls for a supplement. The arithmetic also shows that the gap is small in absolute terms, a few milligrams, against capsules that are sold in hundreds. The site's article on how many almonds to eat in a day deals with portion and soaking, and the list of vitamin E rich foods in India gives more everyday options.

Common mistakes and myths about vitamin E

A second mistake is to count every tocopherol on a label as vitamin E, when only the alpha form is credited. A third is to treat all nuts and all oils as equal sources: walnut and coconut oil are low, almond and sunflower oil high. A fourth is to swallow a capsule meant for the skin; what such capsules do and do not do is covered in the article on vitamin E capsules for skin and hair.

Too much vitamin E, blood thinners and when to see a doctor

The concern about excess is with supplements, not food: the European opinion cited below judges its limits unlikely to be exceeded except by regular users of high-dose products. On the Indian side, ICMR-NIN's 2020 table of upper limits has no column for vitamin E, so the nearest authoritative figure is European. The European Food Safety Authority's 2024 opinion keeps an upper level of 300 mg of alpha-tocopherol a day for adults, including pregnant and lactating women, and 100 mg for children aged 1 to 3. The effect it guards against is impaired blood clotting and bleeding.

That opinion states plainly that its limits do not apply to people taking anticoagulant or antiplatelet medicines such as aspirin, or to people with vitamin K malabsorption. If you take a blood thinner, follow your doctor and do not add vitamin E by yourself. In India, FSSAI's health supplement regulations list the permitted forms, from d-alpha-tocopherol to tocotrienols, cap nutrients in tablets and capsules at one recommended dietary allowance, and require the words NOT FOR MEDICINAL USE on the label.

Studying this with NNWA

Vitamin E is taught at NNWA with dietary fats and the other fat-soluble vitamins. NNWA is a private skill academy based in Kolkata, with classes held online in Hindi and in English. What it trains people for is coaching healthy clients and recognising when a case belongs with a doctor; no course it runs is a degree or a dietitian qualification. The Diploma in Nutrition, Dietetics and Public Health covers requirements and diet planning, and the Clinical Nutrition course covers nutrition in illness. The handbook's entry on selenium covers the mineral tested beside vitamin E in the SELECT trial.