Thanks laidbackfella
(p.s. nice advice you give over in the other forum!).
LeslieAGD, I didn't have time to search earlier as I had to go and meet someone to look at a house for nexy year, but the articles laidbackfella linked were bang on what I was referring to.
ETA: and through the links of one of those links... I learnt cranberry juice is to women what pineapple juice is to men.