4
9.
Dietary factors are known to influence the incidence of colon cancer. The graphs below show
the correlation between meat consumption (eating meat) and colon cancer in sample countries
and the correlation between fat consumption and colon cancer.
Colon cancer incidence /
100 000 women
50
40
30
20
10
0
Sweden
Hungary
0
40 80 120 160 200 240 280 320
Meat consumption / grams day
–1
[Source: B Armstrong and R Doll, Environmental factors and cancer incidence and mortality in different countries, with special
reference to dietary practices, (1975), International J Cancer, 15, pp 617–631]
Colon cancer incidence /
100 000 men
30
25
20
15
10
5
0
0 20 40 60 80 100 120 140 160
Fat consumption / grams day
–1
[Source: http:members.aol.com/wantnomeat/page]
(a)
(i)
State the relationship between daily meat consumption and the incidence of colon
cancer in women.
..........................................................................................................................
(1)