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Eet vet word slank

Eet vet word slank gepubliceerd januari 2013

In dit boek lees je o.a.: * heel veel informatie ter bevordering van je gezondheid; * hoe je door de juiste vetten te eten en te drinken kan afvallen; * hoe de overheid en de voedingsindustrie ons, uit financieel belang, verkeerd voorlichten; * dat je van bewerkte vetten ziek kan worden.

Trick and Treat:
How 'healthy eating' is making us ill
Trick and Treat cover

"A great book that shatters so many of the nutritional fantasies and fads of the last twenty years. Read it and prolong your life."
Clarissa Dickson Wright

Natural Health & Weight Loss
Natural Health & Weight Loss cover

"NH&WL may be the best non-technical book on diet ever written"
Joel Kauffman, PhD, Professor Emeritus, University of the Sciences, Philadelphia, PA


Vitamin E Needs Fat for its Absorption





Yvonne M. Jeanes; Wendy L. Hall; Susan Ellard; Elizabeth Lee; John K. Lodge. The absorption of vitamin E is influenced by the amount of fat in a meal and the food matrix. British Journal of Nutrition, 2004; 92: 575-579

Centre for Nutrition and Food Safety, School of Biomedical and Molecular Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK

Abstract:
Vitamin E absorption requires the presence of fat; however, limited information exists on the influence of fat quantity on optimal absorption.

In the present study we compared the absorption of stable-isotope-labelled vitamin E following meals of varying fat content and source. In a randomised four-way cross-over study, eight healthy individuals consumed a capsule containing 150 mg 2H-labelled RRR--tocopheryl acetate with a test meal of toast with butter (17·5 g fat), cereal with full-fat milk (17·5 g fat), cereal with semi-skimmed milk (2·7 g fat) and water (0 g fat).

Blood was taken at 0, 0·5, 1, 1·5, 2, 3, 6 and 9 h following ingestion, chylomicrons were isolated, and 2H-labelled alpha-tocopherol was analysed in the chylomicron and plasma samples. There was a significant time (P<0·001) and treatment effect (P<0·001) in 2H-labelled alpha-tocopherol concentration in both chylomicrons and plasma between the test meals.

2H-labelled alpha-tocopherol concentration was significantly greater with the higher-fat toast and butter meal compared with the low-fat cereal meal or water (P<0·001), and a trend towards greater concentration compared with the high-fat cereal meal (P=0·065). There was significantly greater 2H-labelled alpha-tocopherol concentration with the high-fat cereal meal compared with the low-fat cereal meal (P<0·05). The 2H-labelled alpha-tocopherol concentration following either the low-fat cereal meal or water was low.

These results demonstrate that both the amount of fat and the food matrix influence vitamin E absorption. These factors should be considered by consumers and for future vitamin E intervention studies.



COMMENT:

Vitamin E is one of the anti-oxidant vitamins many of us need. But there is no point is eating a diet rich in vitamin E – or taking vitamin E pills – unless you eat it with fat. If you are on a low-fat diet, you are wasting your money.

You should also note that breakfast cereals also tend to inhibit its absorption.

This study is also applicable to other nutrients: Vitamin E is only one of four fat-soluble vitamins; the others are vitamins, A, D and K. And in a similar way, these three vitamins will also not be absorbed from a low-fat diet.

While we are on this subject, Calcium is another mineral that needs a high-fat diet for its absorption. Only about 5% is absorbed from skim milk, whereas 50% is absorbed from full-cream milk. It's no wonder that bone diseases are increasing.

Last updated 13 February 2005


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