How important is diet and exercise?

The accepted reference range for Coronary Risk Ratio is 4.68 to 5.87. This should be supported by similarly low cholesterol serum levels.
Cholesterol
Serum*
Date
Reference Range 140 to 199
01-21-00
109
09-02-98
115
08-08-95
117
08-02-89
115
01-10-89
118
12-23-88
104
05-23-88
129
02-16-85
122
06-16-84
133
02-18-84
118
* Blood Chemistry Profile of Trip Reynolds

During the above dates, Coronary Risk Profile ranged from a high of 2.42 in February 1984 to a low of 1.98 in September 1998.