The Iowa Women's Health Study, which has followed more than 35,000 women for decades, found eating more broccoli, cauliflower, kale and other cruciferous vegetables was associated with a lower risk of getting non-Hodgkin's lymphoma in the first place.

A placebo-controlled, double-blind, randomised trial of boys with autism found that two to three servings of cruciferous vegetables a day improves social interaction, abnormal behaviour and verbal communication - within a matter of weeks.

If you consume too much salt, it can cause water retention. When this happens, your body usually responds by raising your blood pressure to push excess fluid and salt out of your system.

So, what is a stroke? In about 90 per cent of strokes, it's the result of blood flow to part of the brain getting cut off, depriving it of oxygen and killing off the part fed by the clogged artery.