HC Deb 18 July 1980 vol 988 c739W
Mr. Kenneth Carlisle

asked the Minister of Transport what evidence he has to show that right-hand sidecars on motorcycles are less safe than left-hand sidecars.

Mr. Kenneth Clarke

Combinations of this kind are a potential hazard to their riders and other road users because of the practical difficulty of arranging the lights so that they do not mislead other road users at night or in poor visibility.

Menstrual disturbances 70 per cent
Increase/Loss of Weight 60 per cent (in most cases less than 4 Kg)
Blood pressure changes 50 per cent (changes in most cases were not significant)
Headaches 7.0 per cent
Weakness 7.0 per cent
*Contraception: May 1978, Vol 17, No 5, pp 395–406

The British Journal of Family Planning: Vol 4, No 3, October 1978.