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==Efectos sobre a saúde==
Favorece o funcionamento do sistema circulatorio, ten propiedades [[antioxidante]]s e oculares, e na prevención do [[Parkinson]], crecemento san do pelo e control dos niveis de colesterol. Tamén se soe administrar a pacientes coa [[enfermidade de La Peyronie]].
A viitamina E non fai decrecer as taxas de mortalidade mesmo a grandes doses,<ref name="abner158">{{cite journal|last=Abner|first=EL|coauthors=Schmitt, FA, Mendiondo, MS, Marcum, JL, Kryscio, RJ|title=Vitamin E and all-cause mortality: a meta-analysis.|journal=Current aging science|date=2011 Jul|volume=4|issue=2|pages=158-70|pmid=21235492}}</ref> e pode mesmo incrementalo algo.<ref>{{cite journal|last=Bjelakovic|first=G|coauthors=Nikolova, D, Gluud, LL, Simonetti, RG, Gluud, C|title=Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases.|journal=Cochrane database of systematic reviews (Online)|date=2008 Apr 16|issue=2|pages=CD007176|pmid=18425980}}</ref> Non mellorou o control do azucre sanguíneo nun grupo non seleccionado de xente con [[diabetes mellitus]]<ref name="abner158"/> nin fixo decrecer o risco de ataque cerebral.<ref>{{cite journal|last=Bin|first=Q|coauthors=Hu, X, Cao, Y, Gao, F|title=The role of vitamin E (tocopherol) supplementation in the prevention of stroke. A meta-analysis of 13 randomized controlled trials.|journal=Thrombosis and haemostasis|date=2011 Apr|volume=105|issue=4|pages=579-85|pmid=21264448}}</ref>
 
A suplementación con viitamina E non fai decrecer as taxas de mortalidade mesmo a grandes doses,<ref name="abner158">{{cite journal|last=Abner|first=EL|coauthors=Schmitt, FA, Mendiondo, MS, Marcum, JL, Kryscio, RJ|title=Vitamin E and all-cause mortality: a meta-analysis.|journal=Current aging science|date=2011 Jul|volume=4|issue=2|pages=158-70|pmid=21235492}}</ref> e pode mesmo incrementaloincrementala algo.<ref>{{cite journal|last=Bjelakovic|first=G|coauthors=Nikolova, D, Gluud, LL, Simonetti, RG, Gluud, C|title=Antioxidant supplements for prevention of mortality in healthy participants and patients with various diseases.|journal=Cochrane database of systematic reviews (Online)|date=2008 Apr 16|issue=2|pages=CD007176|pmid=18425980}}</ref> Non mellorou o control do azucre sanguíneo nun grupo non seleccionado de xente con [[diabetes mellitus]]<ref name="abner158"/> nin fixo decrecer o risco de ataque cerebral.<ref>{{cite journal|last=Bin|first=Q|coauthors=Hu, X, Cao, Y, Gao, F|title=The role of vitamin E (tocopherol) supplementation in the prevention of stroke. A meta-analysis of 13 randomized controlled trials.|journal=Thrombosis and haemostasis|date=2011 Apr|volume=105|issue=4|pages=579-85|pmid=21264448}}</ref>
 
===Deficiencia===
=== Deficiencia de vitamina E ===
O déficit de vitamina E pode causar: [[ataxia espiñocerebelar]]<ref name=traber/>, [[miopatía]]s <ref name=Traber>{{Cite journal|author=Brigelius-Flohé R, Traber MG |title=Vitamin E: function and metabolism|journal=FASEB J. |volume=13 |issue=10 |pages=1145–55 |date=1 July 1999 |pmid=10385606 |url=http://www.fasebj.org/cgi/pmidlookup?view=long&pmid=10385606 }}</ref>, neuropatías periféricas <ref name=sheet>{{cite web| publisher=National Institutes of Health |author=Office of Dietary Supplements|title=Vitamin E Professional Fact Sheet |url=http://ods.od.nih.gov/factsheets/vitamine.asp#h3 |accessdate=14 August 2010}}</ref> <ref name=board>Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press, 2000.</ref> <ref name=kowdley>{{Cite journal|author=Kowdley KV, Mason JB, Meydani SN, Cornwall S, Grand RJ |title=Vitamin E deficiency and impaired cellular immunity related to intestinal fat malabsorption |journal=Gastroenterology|volume=102 |issue=6 |pages=2139–42 |year=1992 |month=June |pmid=1587435 |doi= |url=}}</ref>, [[ataxia]] <ref name=sheet/><ref name=board/><ref name=kowdley/>, miopatías esqueléticas <ref name=sheet/> <ref name=board/> <ref name=kowdley/>,
Existen tres situacións específicas en que se dá deficiencia de vitamina E: en persoas que non poden absorber dietas ricas en graxas, en nenos prematuros cun peso corporal moi baixo (con menos de 1,5&nbsp;kg ao naceren), e en individuos con raros trastornos do metabolismo das graxas. A deficiencia en vitamina E caracterízase xeralmente por trastornos neurolóxicos debidos a unha mala condución dos [[impulso nervioso|impulsos nerviosos]].
 
Os individuos que non poden absorber [[graxa]]s requiren suplementos de vitamina E debido a que é moi importante esta vitamina nos procesos de absorción do [[tracto gastrointestinal]]. Calquera diagnose con [[fibrose quística]], individuos aos que lles foi extirpado parte ou todo o intestino ou estómago, e individuos que teñen incapacidade de absorción de graxas, como os que sofren a [[enfermidade de Crohn]] precisan un suplemento de vitamina E receitada polo.
 
OEn concreto, o déficit de vitamina E pode causar: [[ataxia espiñocerebelar]]<ref name=traber/>, [[miopatía]]s <ref name=Traber>{{Cite journal|author=Brigelius-Flohé R, Traber MG |title=Vitamin E: function and metabolism|journal=FASEB J. |volume=13 |issue=10 |pages=1145–55 |date=1 July 1999 |pmid=10385606 |url=http://www.fasebj.org/cgi/pmidlookup?view=long&pmid=10385606 }}</ref>, neuropatías periféricas <ref name=sheet>{{cite web| publisher=National Institutes of Health |author=Office of Dietary Supplements|title=Vitamin E Professional Fact Sheet |url=http://ods.od.nih.gov/factsheets/vitamine.asp#h3 |accessdate=14 August 2010}}</ref> <ref name=board>Institute of Medicine. Food and Nutrition Board. Dietary Reference Intakes: Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press, 2000.</ref> <ref name=kowdley>{{Cite journal|author=Kowdley KV, Mason JB, Meydani SN, Cornwall S, Grand RJ |title=Vitamin E deficiency and impaired cellular immunity related to intestinal fat malabsorption |journal=Gastroenterology|volume=102 |issue=6 |pages=2139–42 |year=1992 |month=June |pmid=1587435 |doi= |url=}}</ref>, [[ataxia]] <ref name=sheet/><ref name=board/><ref name=kowdley/>, miopatías esqueléticas <ref name=sheet/> <ref name=board/> <ref name=kowdley/>,
[[retinopatía]]s <ref name=sheet/> <ref name=board/> <ref name=kowdley/>, e trastornos da resposta inmunitaria <ref name=sheet/> <ref name=board/> <ref name=kowdley/>.
 
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