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D�NG NHI?U VITAMIN E C� TH? G�Y UNG THU PH?I

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    Posted: 28 September 2008 at 21:28
Nh?ng ngu?i thu?ng xuy�n u?ng vitamin E li?u cao s? tang 28% nguy co ung thu ph?i. Do d�, c�c chuy�n gia khuy�n n�n b? sung ch?t n�y t? rau qu? thay v� t? thu?c.

Nh�m nghi�n c?u t?i �?i h?c Colorado, M?, d� theo d�i 77.000 ngu?i d? tu?i 50-76 trong 4 nam v� t�m hi?u th�i quen u?ng vitamin C, axit folic, vitamin E c?a h?. K?t qu? cho th?y, nh?ng ngu?i u?ng 400 mg vitamin E m?i ng�y s? tang 28% nguy co c� u �c t�nh ? ph?i, d?c bi?t ? nh?ng ngu?i h�t thu?c.

Vitamin E l� ch?t ch?ng �xy h�a gi�p b?o v? t? b�o kh?i c�c g?c t? do. Nhung n?u d�ng ? li?u cao, n� s? ho?t d?ng nhu ch?t ?ng h? �xy h�a, g�y t?n h?i cho t? b�o.

Theo nghi�n c?u n�y, vitamin C v� axit folic kh�ng c� bi?u hi?n l�m tang nguy co ung thu. C�n c�c y?u t? h�t thu?c, ti?n s? gia d�nh v� tu?i t�c d?u c� m?i li�n h? r� r?t v?i nguy co m?c b?nh n�y.

Ti?n si Tim Byers cho bi?t, m?t ch? d? an u?ng c�n b?ng l� ph?i ti�u th? da d?ng c�c lo?i kho�ng ch?t v� ch?t dinh du?ng t? m?i ngu?n, c� th? m?i gi�p gi?m nguy co ung thu.

                                                                             Nguy?n C�ng khu�ng theo BBC


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