Can kale help with eye health? Does grapefruit fight fat? Is the sugar substitute Xylitol good for your teeth? Kate Quilton finds out.

Are berries as good for us as claimed? Can detox drinks containing charcoal rid our bodies of toxins, undoing a weekend of excess? Is sweet potato a malnutrition game-changer?

Can broccoli help fight cancer? Is quinoa better than rice? Should we be adding a type of algae called spirulina to our diets?

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