התשובה של ד"ר דיין

רק עכשיו קראתי את התשובה של ד"ר דיין, כמה שזה מטופש, לומר בתחילת ההודעה שויטמינים מזינים את הסרטן ובהמשך ההודעה הוא כתב שהויטמינים מחזקים את מערכת החיסון, הוא שם לב למה שהוא כותב? זה רופא זה? הרי אם הויטמינים מחזקים את מערכת החיסון זה כבר סותר שהם מזינים את הגידול, שהוא ביטוי של מערכת חיסון ירודה. כך שלא צריך להוכיח שום דבר על ויטמינים, פשוט צריך לשים לב מה הוא אומר... הוא כנראה מפחד שיוציאו עליו דיבה כמו שעושים למטפלים אחרים שעוסקים בויטמינים, אז הוא לא מוכן להודות בתפקיד של ויטמינים נגד סרטן.

מדוע הוא עושה אינפוזיה של ויטמינים? להזין את הסרטן? זה נשמע כמו בדיחה של הגששים.

קשישים סובלים מתפקוד ירוד של מערכת החיסון ורגישים לזיהומים. מתן ויטמינים ותוספים אחרים לקשישים שאינם בתת-תזונה אינו מפחית את שכיחות הזיהומים. J Am Geriatr Soc. 2007 Jan;55(1):35-42 Effect of multivitamin AND mineral supplementation on episodes of infection in nursing home residents: a randomized, placebo-controlled study. OBJECTIVES: To evaluate the effect of vitamin AND mineral supplementation on infections in an elderly institutionalized population. DESIGN: Eighteen-month, randomized, placebo-controlled trial. SETTING: Twenty-one long-term care facilities. PARTICIPANTS: Seven hundred sixty-three subjects from 21 long-term care facilities. INTERVENTION: Participants were randomized to receive one multivitamin AND mineral supplementation daily OR placebo. MEASUREMENTS: The primary outcome was number of infections per subject. Secondary outcomes were antibiotic use AND hospitalization rates. Infection control surveillance was conducted over 18 months using standardized criteria. RESULTS: Outcome data from 748 subjects, mean age 85, were included in the intention-to-treat analysis. Using univariate analyses, there was no difference in infectious episodes between the supplemented AND placebo groups (3.5 infections per 1,000 resident-days vs 3.8 infections per 1,000 resident-days, odds ratio (OR)=0.92, 95% confidence interval (CI)=0.82-1.03, P=.12). There was a reduction in antibiotic usage in the supplementation group, but this was not significant in the multivariate model. There was no difference in the number of hospital visits. In the multivariate analysis, the effect of multivitamin use on total number of infections was not significant (OR=0.77, 95% CI=0.54-1.1). Subjects without dementia had a greater rate of infections than those with dementia (OR=1.44, 95% CI=1.19-1.76). In post hoc subgroup analysis, subjects without dementia who received supplementation had a significantly lower rate of infections than those who received placebo (relative risk=0.81, 95% CI=0.66-0.99). CONCLUSION: Overall, multivitamin AND mineral supplementation does not have a significant effect on the incidence of infections in institutionalized seniors, although the subgroup of residents in long-term care without dementia may benefit from supplementation. Further research is needed to determine its effect in high-risk subgroups within the nursing home population. J Hum Nutr Diet. 2006 Jun;19(3):179-90. A systematic review of multivitamin AND multimineral supplementation for infection. BACKGROUND: Infections are major causes of morbidity AND mortality worldwide. Micronutrients have important functions in the body's immune system. This systematic review examined the evidence from randomized controlled trials (RCTs) on whether multivitamin AND multimineral supplementation is effective in reducing infection. METHODS: Electronic databases searched: Cochrane Controlled Trials Register, EMBASE, MEDLINE, BIOSIS, CAB abstracts. Hand searching of nutrition journals AND reference lists was carried out. RCTs AND quasi-randomized trials of supplementation of adults with at least two vitamins OR minerals OR a combination were selected. Study results were combined in meta-analysis plots where appropriate. RESULTS: Twenty studies were included in the review. Small numbers were available for each meta-analysis. Results are presented here without the Chandra group studies. No significant difference was found in the number of episodes of infection in older people (>or = 65 years) between those supplemented AND those not supplemented; (WMD) 0.06 [95% confidence interval (CI) -0.04, 0.16], P = 0.25. In other adults groups, there were significantly less episodes of infection in those supplemented; (WMD) -1.20 (95% CI -2.08, -0.32), P = 0.008. There was no significant difference between those older people supplemented AND those not supplemented in the number with at least one infection; relative risk (RR) 0.98 (95% CI 0.86, 1.11), P = 0.77. Similarly, there was no significant difference in the numbers in other adult groups who had at least one episode of infection between those supplemented AND those taking placebo; (RR) 0.81 (95% CI 0.65, 1.00), P = 0.06. Subgroup analyses suggested that supplemented people aged 65 years OR over may benefit more if they are undernourished AND supplemented for over 6 months, WMD -0.67 infections (95% CI -1.24, -0.10), P = 0.02. CONCLUSION: Further large trials are needed, particularly in undernourished older people. Trials of supplementation periods of over 6 months are recommended.