Risk of Bias.

<p>Key: + Low risk of bias;? Unclear risk of bias; − High risk of bias</p><p>Risk of Bias.</p

Forest Plot: 12-month Body Mass Index.

<p>Forest Plot: 12-month Body Mass Index.</p

Forest Plot: Blood Pressure.

<p>Forest Plot: Blood Pressure.</p

Forest Plot: Cardiac Events.

<p>Forest Plot: Cardiac Events.</p

Forest Plot: 12-month Blood Pressure.

<p>Forest Plot: 12-month Blood Pressure.</p

Forest Plot: Body Mass Index.

<p>Forest Plot: Body Mass Index.</p

Forest Plot: Waist:Hip Ratio.

<p>Forest Plot: Waist:Hip Ratio.</p

Forest Plot: Smoking.

<p>Forest Plot: Smoking.</p

Details of the Flow of Papers through the Review Process.

<p>Details of the Flow of Papers through the Review Process.</p

Forest Plot: Fruit and Vegetable Consumption.

<p>Forest Plot: Fruit and Vegetable Consumption.</p