Intensive lifestyle changes for reversal of coronary heart disease.

Author(s): 

Ornish D1, Scherwitz LW, Billings JH, Brown SE, Gould KL, Merritt TA, Sparler S, Armstrong WT, Ports TA, Kirkeeide RL, Hogeboom C, Brand RJ.

Journal: 

JAMA

Category: 

Study Design: 

Abstract: 

CONTEXT:
The Lifestyle Heart Trial demonstrated that intensive lifestyle changes may lead to regression of coronary atherosclerosis after 1 year.

OBJECTIVES:
To determine the feasibility of patients to sustain intensive lifestyle changes for a total of 5 years and the effects of these lifestylechanges (without lipid-lowering drugs) on coronary heart disease.

DESIGN:
Randomized controlled trial conducted from 1986 to 1992 using a randomized invitational design.

PATIENTS:
Forty-eight patients with moderate to severe coronary heart disease were randomized to an intensive lifestyle change group or to a usual-care control group, and 35 completed the 5-year follow-up quantitative coronary arteriography.

SETTING:
Two tertiary care university medical centers.

INTERVENTION:
Intensive lifestyle changes (10% fat whole foods vegetarian diet, aerobic exercise, stress management training, smoking cessation, group psychosocial support) for 5 years.

MAIN OUTCOME MEASURES:
Adherence to intensive lifestyle changes, changes in coronary artery percent diameter stenosis, and cardiac events.

RESULTS:
Experimental group patients (20 [71%] of 28 patients completed 5-year follow-up) made and maintained comprehensive lifestyle changesfor 5 years, whereas control group patients (15 [75%] of 20 patients completed 5-year follow-up) made more moderate changes. In the experimental group, the average percent diameter stenosis at baseline decreased 1.75 absolute percentage points after 1 year (a 4.5% relative improvement) and by 3.1 absolute percentage points after 5 years (a 7.9% relative improvement). In contrast, the average percent diameter stenosis in the control group increased by 2.3 percentage points after 1 year (a 5.4% relative worsening) and by 11.8 percentage points after 5 years (a 27.7% relative worsening) (P=.001 between groups. Twenty-five cardiac events occurred in 28 experimental group patients vs 45 events in 20 control group patients during the 5-year follow-up (risk ratio for any event for the control group, 2.47 [95% confidence interval, 1.48-4.20]).

CONCLUSIONS:
More regression of coronary atherosclerosis occurred after 5 years than after 1 year in the experimental group. In contrast, in the control group, coronary atherosclerosis continued to progress and more than twice as many cardiac events occurred.