Algunos estudios sobre el programa de Ornish realizados por investigadores independientes, por sólo citar unos pocos, los primeros que me aparecieron en una búsqueda rápida (espero que entiendas inglés):
The Dean Ornish program for cardiac rehabilitation has been undergoing a national trial of patients with moderate to severe heart disease. Preliminary results indicate that the program can actually reverse coronary artery disease by lowering patients' cholesterol levels and reducing their blood pressure
. Although the regimen requires a strict vegetarian diet, the program saves money over traditional therapies such as angioplasty and appears to be even more effective
BACKGROUND: Patients who have been treated for coronary heart disease can enroll in traditional cardiac rehabilitation, the Ornish Program, or no rehabilitation at all. No study has compared the impact of each on cardiovascular disease risk (CVD) factors. METHODS: The current study compared CVD risk changes in post coronary artery bypass graft or percutaneous coronary intervention procedure patients who participated in the Ornish Heart Disease Reversing Program, a traditional cardiac rehabilitation, and a control group that received no formal cardiac risk-reduction program. This was a longitudinal, observational study of 84 patients receiving CVD standard of care who elected to participate in 1 of the 3 study groups. Assessments of CVD risk factors and anginal severity were obtained at baseline, 3 months, and 6 months. RESULTS: Ornish program participants had significantly greater reductions in anginal frequency, body weight, body mass index, systolic blood pressure, total cholesterol, low-density lipoprotein cholesterol, glucose, dietary fat, and increases in complex carbohydrates than were documented in the rehabilitation or control groups. The control group experienced the greatest reduction in anginal pain severity, but also had significantly higher systolic blood pressure, total cholesterol, and low-density lipoprotein cholesterol. CONCLUSIONS: These findings suggest that CVD patients who choose to participate in the Ornish program can experience greater improvements in CVD risks than patients who choose to participate in traditional cardiac rehabilitation or no formal program
In an effort to make intensive lifestyle modification programs more accessible to patients with cardiovascular disease, the Ornish Program was offered at eight independent medical centers located across the United States. The purpose of this study was to determine if one of these independent sites was able to replicate outcomes produced by the original Ornish Program. Fifty program participants from six different cohorts provided baseline, 3- and 12-month data consisting of blood lipids, body fat, blood pressure, anginal pain, quality of life, stress, depression, social support, and hostility. A pooled analysis showed significant reductions in almost all physiological and psychosocial variables with most reductions persisting for at least 12 months. These findings suggest that cardiovascular disease patients who choose to participate in an independent, intensive lifestyle modification program can experience significant improvements in both physiological and psychosocial cardiovascular disease risk factors
PURPOSE: This study evaluated the effect of the Dr. Dean Ornish Program for Reversing Heart Disease on cardiovascular disease as measured by the intima-media thickness of the common carotid artery and compared this effect to outcomes from patients participating in traditional cardiac rehabilitation. DESIGN: Randomized clinical trial. SETTING: Swedish American Health System. SUBJECTS: Ninety three patients with clinically confirmed coronary artery disease were randomly assigned to the intervention (n = 46) or traditional cardiac rehabilitation (n = 47). INTERVENTION: Dr. Dean Ornish Program for Reversing Heart Disease. MEASURES: Ultrasound of the carotid artery and other cardiovascular risk factors were measured at baseline, 6, and 12 months. ANALYSIS: Intent-to-treat analysis. RESULTS: There was no significant reduction in the carotid intima-media thickness of the carotid artery in the Ornish group or the cardiac rehabilitation group. Ornish Program participants had significantly improved dietary habits (p < .001), weight (p < .001), and body mass index (p < .001) as compared with the rehabilitation group. The decrease in the number of patients with angina from baseline to 12 months was 44% in Ornish and 12% in cardiac rehabilitation
. CONCLUSIONS: The Ornish Program appears to causes improvements in cardiovascular risk factors but does not appear to change the atherosclerotic process as it affects the carotid artery.
Por otra parte, esta afirmación "por su desaforada ingesta de carbohidratos que produce una hiperinsulinemia crónica" es completamente falsa y no se sustenta en ningún estudio científico ni dato fisiológico serio. Te aconsejaría que te leyeses este artículo sobre la dieta de la zona, que efectivamente, es mejor que la dieta occidental media, al menos que la americana, aunque sólo sea por promocionar una mayor ingesta de verduras y de productos integrales frente a refinados, pero está muy, pero que muy lejos de ser una dieta óptima para la salud: hay MILES de estudios que prueban los beneficios de un dieta vegana o casi vegana, mucho más rica en carbohidratos complejos y con menor proporción de proteínas y grasas, sobre múltiples enfermedades y sobre la salud en general. Y hay miles también demostrando que esos niveles de proteínas, ya no digamos de grasa, aunque sean de origen vegetal, son un riesgo a largo plazo. Con la dieta de la zona se baja de peso y puede mejorar momentáneamente una diabetes y esos son todos sus beneficios, a no ser que vengas de una dieta mucho peor.