1.   A final covering of aluminium foil or carbon paper reduces the risk of detection by X-ray machines.

2.   Although age, gender and genes are beyond our control, we can significantly reduce our risks through lifestyle choices.

3.   Anything that inhibits ovulation - eg, pregnancy or oral contraception - reduces the risk of ovarian cancer.

4.   Barrier contraception has been shown to reduce the risk of transmission.

5.   Clean the wound thoroughly to reduce the risk of infection.

6.   Developers and investors seek to reduce risk, and a key influence on their thinking will be hard evidence of success.

7.   Fat control is still very important for reducing risks for heart disease, some cancers and obesity.

8.   Food is shared to reduce risks of damage in fighting and to prevent interference with eating.

9.   Getting rid of weapons reduces the risk of accidental, unauthorised, hair trigger or pre-emptive use.