The ketogenic (keto) diet, characterized by high fat, moderate protein, and minimal carbohydrate intake, has surged in popularity due to its perceived efficacy in rapid weight loss. Nevertheless, accumulating evidence highlights significant health risks, particularly exacerbating cardiovascular morbidity in patients with Coronary Artery Disease (CAD), mediated primarily through increased Low-Density Lipoprotein (LDL) cholesterol, systemic inflammation, oxidative stress, and endothelial dysfunction. Conversely, Bethsaida Hospital, under the leadership of Prof. Dasaad Mulijono (DM), has adopted an evidence-based Whole-Food Plant-Based Diet (WFPBD) that is deeply embedded within compassionate, holistic patient care, achieving remarkable clinical outcomes. These successes include reversal of hypertension, diabetes control without reliance on insulin, substantial reductions in LDL cholesterol, sustained normalization of body weight, renal function stabilization, notable recovery in heart failure patients, mitigation of chronic inflammation, and remarkably low restenosis rates (~2%) following Drug-Coated Balloon (DCB) angioplasty. This review critically examines the pathophysiological mechanisms underlying keto-induced cardiovascular harm, explores the socio-psychological drivers of its widespread acceptance despite inherent risks, outlines the acute and chronic adverse effects, and robustly contrasts these findings with the proven efficacy and sustainability of plant-based dietary interventions.
CAD continues to be a leading cause of global mortality, with dietary choices significantly influencing disease progression [1-8]. The ketogenic diet, highly publicized for quick weight-loss outcomes, has increasingly attracted individuals despite growing concerns about its long-term cardiovascular risks. The diet's reliance on animal-derived foods, which are rich in saturated fats and cholesterol, raises serious health concerns. In contrast, Bethsaida Hospital has championed a different dietary paradigm-a WFPBD-grounded in scientific evidence and full of compassion. Over nearly seven years, this integrative approach has demonstrated unprecedented clinical outcomes, reversing chronic conditions such as hypertension and diabetes, regressing atherosclerotic plaques, improving heart failure prognosis, and achieving exceptionally low restenosis rates (~ 2%) following DCB angioplasty. This article comprehensively addresses the scientific basis for the cardiovascular dangers associated with the keto diet, critically examines its widespread popularity, describes its adverse effects, and presents Bethsaida Hospital’s successful experience with WFPBD as a superior and sustainable alternative.
The keto diet's emphasis on high saturated fat and cholesterol intake raises concerns regarding cardiovascular safety. High-fat animal-derived foods, staples in keto plans, increase serum LDL cholesterol, elevate inflammation markers, and worsen endothelial dysfunction-All critical drivers of atherosclerosis. Additionally, keto diets limit fibre-rich vegetables and fruits, which are essential in managing oxidative stress and promoting arterial health.
The detrimental effects of animal products on cardiovascular health include several mechanisms:
The allure of rapid weight loss and simplified dietary guidelines drives the widespread appeal of the keto diet. Short-term visible results, celebrity endorsements, and compelling social media portrayals overshadow potential long-term cardiovascular harm. Many individuals experience temporary improvements in metabolic parameters following initial weight reduction, which further promotes its adoption despite insufficient evidence of sustained cardiovascular benefits.
Additional factors behind keto's sustained popularity include [101-104]:
Collectively, these factors contribute significantly to the keto diet's continued popularity despite clear concerns regarding its sustainability and cardiovascular risks.
While the ketogenic diet is widely promoted for quick weight-loss results, it carries significant short-term and long-term adverse effects [102,103-110].
Critically, despite initial enthusiasm, the keto diet is challenging to maintain sustainably, frequently resulting in dietary relapse, metabolic disturbances, and compromised cardiovascular health. These profound short-term and long-term adverse effects underscore the need for careful consideration and medical supervision when adopting restrictive dietary regimens (Table 1) (Figure 1).
| Table 1: Keto diet vs., Whole-Food Plant-Based Diet (WFPBD) in cardiovascular health. | ||
| Aspect | Keto Diet (Adverse Effects) | WFPBD (Benefits) |
| LDL Cholesterol | Increases LDL, promotes foam cell formation, and atherosclerosis | Profound LDL reduction; avoids costly PCSK9 inhibitors |
| Inflammation & Oxidative Stress | Elevates systemic inflammation, ROS, AGEs, TMAO, Neu5Gc, suPAR | Reduces chronic inflammation; provides antioxidants and phytochemicals |
| Endothelial Function | Impairs NO synthesis, promotes vascular injury & restenosis | Enhances NO bioavailability, improves vascular tone, and repairs |
| Gut Microbiota | Fibre deficiency Dysbiosis, pro-inflammatory metabolites | High fibre SCFA production, gut barrier integrity, anti-inflammatory effects |
| Metabolic Health | Promotes insulin resistance, hyperinsulinemia, obesity, and hypertension | Reverses hypertension, controls diabetes without insulin, improves insulin sensitivity |
| Weight Management | Rapid short-term weight loss but poor sustainability, rebound is common | Sustainable weight loss with long-term BMI normalization |
| Renal & Bone Health | Risk of kidney stones, CKD progression, and bone demineralization | Stabilizes renal function; protects bone health through alkalinizing foods |
| Cardiovascular Outcomes | Increases CAD progression, restenosis, plaque instability | CAD regression, heart failure recovery, restenosis rates ~2% after DCB |
| Aging & Longevity | Accelerates telomere shortening and mitochondrial dysfunction | Protects mitochondria, slows telomere attrition, promotes healthy aging |
| Psychological & Social | Difficult to maintain; anxiety, relapse, and yo-yo dieting are common | High adherence improves quality of life and patient satisfaction |
At Bethsaida Hospital, initiated by Prof. DM, adopting a WFPBD has dramatically transformed cardiac patient outcomes. For nearly seven years, our comprehensive nutritional program, grounded in deep love and compassion, has shown remarkable clinical successes:
Moreover, during the COVID-19 pandemic, our WFPBD program played a critical role in safeguarding thousands of patients, particularly elderly individuals with multiple comorbidities, by enhancing immune resilience, improving metabolic parameters, and reducing the severity of disease outcomes.
Despite initial skepticism from some sectors, Bethsaida Hospital’s holistic approach, rooted in evidence, compassion, and integrity, has become a transformative exemplar of adequate and compassionate healthcare in Indonesia. This approach has achieved superior clinical outcomes and enhanced patient adherence, quality of life, and overall wellness, showcasing the profound potential of integrating evidence-based medicine with genuine compassionate care (Table 2).
| Table 2: Mechanistic pathways: Keto diet vs., Whole-Food Plant-Based Diet (WFPBD). | ||
| Mechanistic Pathway | Keto Diet (Harmful Effects) | Plant-Based Diet (Protective Effects) |
| Lipid Profile | LDL cholesterol, foam cell formation, plaque instability | LDL cholesterol, plaque regression, improved stability |
| Inflammation | systemic inflammation (BCAAs, Neu5Gc, suPAR) | chronic inflammation (Polyphenols, phytonutrients) |
| Oxidative Stress | ROS, AGEs, mitochondrial dysfunction | Rich in antioxidants Oxidative stress, protects mitochondria |
| Endothelial Function | Nitric oxide (NO) bioavailability Vasoconstriction, restenosis | NO synthesis from plant nitrates Vasodilation, vascular repair |
| Gut Microbiota | Dysbiosis, SCFA, TMAO Vascular injury | Healthy microbiota, SCFA Anti-inflammatory, endothelial protection |
| Metabolic Effects | Promotes insulin resistance, hyperinsulinemia, obesity, and hypertension | Enhances insulin sensitivity, reverses diabetes, and normalizes BP |
| Renal & Bone Health | Kidney stone risk, metabolic acidosis, osteoporosis | Stabilizes renal function, preserves bone mineral density |
| Cellular Aging | Telomere shortening, vascular aging | Slows telomere attrition, promotes longevity |
| Clinical Outcomes | CAD progression, restenosis 10-20% post-DCB | CAD regression, restenosis ~2% post-DCB, improved survival |
The ketogenic diet poses significant cardiovascular risks, particularly in individuals with CAD, by elevating LDL cholesterol, exacerbating systemic inflammation, enhancing oxidative stress, and impairing endothelial function. Although initially attractive due to rapid weight loss and perceived simplicity, ketogenic diets exhibit considerable limitations in sustainability and are associated with numerous adverse health outcomes. Conversely, Bethsaida Hospital’s innovative WFPBD program, spearheaded by Prof. DM and renowned for its empathetic and holistic approach, has consistently demonstrated superior clinical outcomes. These include the profound reversal of chronic diseases, enhanced metabolic regulation, substantial mitigation of cardiovascular risk, improved quality of life, and remarkably low rates of restenosis following interventional cardiology procedures. The evidence overwhelmingly supports integrating a WFPBD approach as an essential, sustainable, and clinically validated strategy for CAD prevention and management, significantly enhancing cardiovascular health and overall patient well-being.
D.M.; Conceptualization, writing, review, and editing.
This research received no external funding.
Data are contained within the article.
The authors declare no conflict of interest.
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