A systematic review by British authors has concluded that eating a diet rich in green leafy vegetables may lower the risk of developing type-2 diabetes. Combining the results of six studies (a total of more than 220,000 participants), the authors found that eating more fruit and vegetables did not significantly reduce the risk of diabetes, although there was a general trend in that direction. However, meta-analysis suggested that eating an additional one and a half portions of green leafy vegetables (e.g. cabbage, brussel sprouts, broccoli, cauliflower, spinach) daily had the effect of reducing the risk of diabetes by 14%, independent of any effect on weight loss. (Fruit and vegetable intake and incidence of type 2 diabetes mellitus: systematic review and meta-analysis. BMJ. 2010 Aug 18;341:c4229. doi: 10.1136/ bmj.c4229).

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