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Assessing the Independent Effect of Dietary Counseling and Hypolipidemic Medications on Serum Lipids

Integrated Physicians of Nebraska, Omaha, Nebraska

Kristy Ketchum

Center for Clinical Cardiology and Research, in conjunction with Sartori Memorial Hospital, Cedar Falls, Iowa

Diane M. Fleming

Center for Clinical Cardiology and Research, in conjunction with Sartori Memorial Hospital, Cedar Falls, Iowa

Ruth Gaede

Center for Clinical Cardiology and Research, in conjunction with Sartori Memorial Hospital, Cedar Falls, Iowa

Determination of changes in total cholesterol (TC) and triglyceride (TG) levels has focused primarily on hypolipidemic drug effects. Changes resulting from dietary effect alone versus diet and drug effect have not yet been fully established.

Seventy subjects were enrolled into four treatment groups to determine the impact of diet and drug effect upon TC and TG. Group 1 (n = 28) served as the control group and received no dietary counseling or drug therapy. Group 2 (n = 22) received dietary coun seling. Group 3 (n = 7) underwent dietary counseling for six months and drug therapy for eighteen months. Subjects in groups 1-3 were monitored for eighteen months. Patients in group 4 (n = 13) were followed up for thirty-six months. No intervention occurred during the first eighteen months, and hypolipidemic medications were used during the second eighteen-month period.

Subjects in groups 1 and 4 received no specific dietary counseling and demonstrated no significant improvement over the course of the study. Patients in groups 2 and 3 showed significant reductions in both TC and TG. The improvement in TC seen for patients in group 3 was reduced after dietary counseling ceased.

Dietary intervention is necessary if patients are to statistically significantly reduce TC and TG levels. Drug therapy demonstrated the expected reductions in both TC and TG but did not statistically significantly lower lipid levels without concomitant dietary coun seling. When dietary counseling and hypolipidemic medications are used together, reduc tions in TC and TG values are even greater than those seen with dietary effect alone. Diet control alone appears to significantly reduce TC and TG levels, resulting in reduced need for antianginal medications.

Angiology, Vol. 47, No. 9, 831-840 (1996)
DOI: 10.1177/000331979604700901


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