1. I 30 . -4 0-----0 Kenyan normasa .0-* London civil servants 60 80 100 120 1140 160 180 200 SVSTDLIC B. P. (I'| 'n. H9)FIGURE 2 Distribution:of systolic blood pnzssure in middle-and ripen in rwopapularions-3

2. A-03-53-02-5201-5I 0 ll!IQIIIOaI. .P lol.l. .||I20 o 0O0 o I 0090. . . ... ..". .m. .. .2- .63 ' 050-1 10 Water hardness (mmolll) FIGURE I Relation betwwn water unmy and cardiovascular rnonahr in town:oflhc UK. 3. NON- CND --. -. CH 0I40 I50 I80 220 260 309 360 300 420 400 490 500+SEIIUM CHOLESTEROLFIGURE 3 Percentage distribution o_/ serum chalaterol levels (mg/ dl) in men aged 50-62 who did ordid not subsequently develop coronary heart disease (Frotningltant stud; -5).