New book in Dutch

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 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

Soy Online Service

Soya Supplements May Be a Health Risk: German Consumer Watchdog

RSSL -- Decemeber 6, 2007

The Federal Institute for Risk Assessment (BfR) Germany, has undertaken a health assessment of isoflavone supplements. BfR found that there is a lack of evidence to confirm the safety of such supplements, yet there is some evidence to suggest that there may be health risks. Long term studies of these extracts are needed to evaluate the health implications.

Isoflavones are phyto-estrogens that may have a hormone like (estrogen) effect on the body. Isoflavones are found predominantly in soya beans (Glycine hispida max) and Red Clover (Trifloium pratense). Daidzein, genistein and glycitein are the main isofavones found in soya. Red clover is a mix of many isoflavone compounds; formononetin and biochanin A are thought to be the main ones. Isoflavones may be ingested naturally from food or as an isolated, fortified form in food supplements.

One of the main groups who are targeted by isoflavone marketing is post menopausal women. It is often claimed that such supplements can ease the symptoms of the menopause, offering an alternative to hormone replacement therapy. Other claimed advantages of the supplements are heart, bone and breast health.

After reports of adverse events relating the taking of soya / red clover supplements, BfR carried out a health assessment. This included evaluating the scientific studies published to date. The reported adverse events included itching, eczema, nausea, dizziness, abdominal pain, skin rash and sweating. Conflicting reports and a lack of long term studies make isoflavones a difficult subject to evaluate. Indeed one study found that isoflavones stimulated breast cancer cells in mice, while another found that women with a high soy diet generally have lower rates of breast cancer.

BfR found that the assumed positive effects of isolated isoflavones on menopausal complaints have not been sufficiently substantiated. The reported adverse effects are not uniform and could be caused by an allergic reaction to soya protein, or perhaps be symptoms of the menopause. When administered at high doses in isolated or fortified form, isoflavones impair the functioning of the thyroid gland and can change mammary gland tissue.

The team conclude that it can not be ruled out that the estrogen like effects of isoflavones could promote the development of breast cancer. The necessary long term studies to prove the safety of isoflavone containing products are not available. Nor is it currently possible to reliably establish a dose which could be considered safe.

It is worth noting that postmenopausal women are at increased risk of breast cancer. The full report (23 pages) is available on the BfR web site.

RSSL's Natural Products Laboratory can determine daidzein, genistein and other soya isoflavones by HPLC. For more information please contact Customer Services on Freefone 0800 243482 or e-mail

RSSL endeavours to check the veracity of news stories cited in this free e-mail bulletin by referring to the primary source, but cannot be held responsible for inaccuracies in the articles so published. RSSL provides links to other World Wide Web sites as a convenience to users, but cannot be held responsible for the content or availabilty of these sites. This document may be copied and distributed provided the source is cited as RSSL's Food e-News and the information so distributed is not used for profit.

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