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Physician ReviewerMBBS, MD, DM (Gastroenterology)

Dr. S.K. Sarin, MBBS, MD, DM (Gastro), FNA

Senior Professor & Director, Institute of Liver & Biliary Sciences (ILBS), New Delhi

License VerifiedActive & In Good Standing

ID: DMC-07612

Delhi Medical Council (DMC) & National Academy of Medical Sciences (NAMS)

Professional Background & Bio

Dr. Shiv Kumar Sarin is a globally acclaimed hepatologist, Senior Professor, and Director of the Institute of Liver and Biliary Sciences (ILBS), New Delhi. Recipient of the Padma Bhushan award and former President of the Asian Pacific Association for the Study of the Liver (APASL), he is a world leader in fatty liver disease, liver cirrhosis, and metabolic gastrointestinal disorders.

Medical Specialization

Hepatology, Gastroenterology, Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD), Cirrhosis, Gut Health

Clinical Experience

38+ Years Clinical Hepatology & Academic Research

Hospital / Clinical Affiliation

Director & Head, Department of Hepatology, Institute of Liver and Biliary Sciences (ILBS), Vasant Kunj, New Delhi

Education & Medical Training
  • DM in Gastroenterology - All India Institute of Medical Sciences (AIIMS), New Delhi
  • MD in General Medicine - SMS Medical College, Jaipur
  • MBBS - SMS Medical College, Jaipur

Academic Thesis & Medical Research

700+ High-Impact Articles (The Lancet, Hepatology, Gastroenterology, NEJM)
Postgraduate Thesis / Dissertation Title:

“Pathogenesis and Hemodynamics of Sinusoidal and Pre-Sinusoidal Portal Hypertension: Gastric Variceal Anatomy and Endoscopic Sclerotherapy Protocols”

Institution: All India Institute of Medical Sciences (AIIMS), New Delhi

Doctorate of Medicine (DM) superspecialty dissertation establishing the globally adopted 'Sarin Classification of Gastric Varices' and prospective randomized clinical trials on endoscopic cyanoacrylate obliteration versus non-selective beta-blockers.

Key Investigative & Clinical Research Domains:
• Acute-on-Chronic Liver Failure (ACLF) Global Definitions & APASL Consensus• Non-Alcoholic Fatty Liver Disease (MASLD / MASH) Biomarkers & Reversal• Portal Hemodynamics, Hepatic Venous Pressure Gradient (HVPG)• Liver Regeneration & Stem Cell Therapy in Cirrhosis

Clinical Areas Reviewed for mediguide4u:

Non-Alcoholic Fatty Liver Disease (MASLD / MASH) Progression & ReversalLiver Enzyme Interpretation (ALT, AST, GGT, Alkaline Phosphatase)Metabolic Syndrome, Insulin Resistance & Visceral AdiposityNutritional Deficiencies (Vitamin B12, Iron, Vitamin D) & Absorption PathwaysGastroesophageal Reflux Disease (GERD) & Gut Microbiome Dysbiosis
Conflict-of-Interest & Editorial Independence Disclosure

Dr. Sarin has zero corporate pharmaceutical ties. Reviews strictly adhere to APASL, AASLD, and EASL clinical guidelines.

Articles Written by Dr. S.K. Sarin, MBBS, MD, DM (Gastro), FNA

Educational healthcare resources created for public health literacy.

9 Authored
vitamin B12 deficiencyLifestyle Diseases
2026-08-2910 min read

Vitamin B12 Deficiency: Symptoms, Causes, Foods, Blood Tests, and Treatment Guide

Vitamin B12 (cobalamin) is vital for red blood cell production, cellular DNA synthesis, and central/peripheral neurological integrity. Learn how to spot subtle early deficiency signs, interpret serum B12 and MMA lab results, explore dietary cobalamin sources, and implement proven oral and intramuscular replacement protocols.

Lifestyle DiseasesRead Guide
vitamin D deficiencyLifestyle Diseases
2026-08-267 min read

Vitamin D Deficiency: Symptoms, Causes, Risk Factors, and How to Maintain Healthy Levels

We all understand that Vitamin D helps to build our bones; however, it serves an important but subtle function in many aspects of our body, including our muscles, strength, and immunity. If you have felt more fatigue than usual or you just want to make sure your levels are optimal, let’s look at the symptoms of vitamin D deficiency, how it can be diagnosed, and ways to increase your levels.

Lifestyle DiseasesRead Guide
GERD and Chronic Acid Reflux: Triggers, PPI Medications, and Dietary AdjustmentsLifestyle Diseases
2026-08-089 min read

GERD and Chronic Acid Reflux: Triggers, PPI Medications, and Dietary Adjustments

Gastroesophageal Reflux Disease (GERD) is a chronic digestive disorder occurring when acidic gastric contents retrograde into the esophagus, causing mucosal inflammation and distressing symptoms. Explore the biomechanics of Lower Esophageal Sphincter (LES) incompetence, step-up vs. step-down medical therapies (PPIs, H2 blockers), endoscopic screening for Barrett's esophagus, and clinical dietary strategies.

Lifestyle DiseasesRead Guide
Gout and Hyperuricemia: Uric Acid Causes, Flare-Up Relief, and Low-Purine DietLifestyle Diseases
2026-08-089 min read

Gout and Hyperuricemia: Uric Acid Causes, Flare-Up Relief, and Low-Purine Diet

Gout is an intensely painful inflammatory crystal arthropathy triggered by monosodium urate (MSU) crystal deposition in synovial joints and periarticular tissues. Explore the biochemistry of purine catabolism, hyperuricemia saturation thresholds (>6.8 mg/dL), acute flare abortive therapies (Colchicine, NSAIDs), and lifelong treat-to-target Urate-Lowering Therapy (Allopurinol).

Lifestyle DiseasesRead Guide
Metabolic Syndrome: Clinical Diagnostic Criteria, Heart Risks, and Lifestyle ReversalLifestyle Diseases
2026-08-089 min read

Metabolic Syndrome: Clinical Diagnostic Criteria, Heart Risks, and Lifestyle Reversal

Metabolic Syndrome is a complex cluster of interrelated physiological, biochemical, and metabolic abnormalities that dramatically accelerates the risk of cardiovascular disease, Type 2 diabetes, and all-cause mortality. Explore the standardized NCEP ATP III diagnostic criteria, the pathophysiology of visceral adiposity and lipotoxicity, and comprehensive clinical lifestyle reversal protocols.

Lifestyle DiseasesRead Guide
Chronic Kidney Disease (CKD): Stages, eGFR Decline, Potassium, and Renal NutritionLifestyle Diseases
2026-09-1110 min read

Chronic Kidney Disease (CKD): Stages, eGFR Decline, Potassium, and Renal Nutrition

Chronic Kidney Disease (CKD) is characterized by progressive, irreversible loss of renal function lasting longer than 3 months, classified into 5 clinical stages based on estimated Glomerular Filtration Rate (eGFR) and albuminuria tiers. Review KDIGO staging heatmaps, metabolic complications (hyperkalemia, hyperphosphatemia, renal anemia), and specialized renal medical nutrition therapy.

Lifestyle DiseasesRead Guide
Irritable Bowel Syndrome (IBS): Subtypes, Visceral Hypersensitivity, and Low-FODMAP DietLifestyle Diseases
2026-09-129 min read

Irritable Bowel Syndrome (IBS): Subtypes, Visceral Hypersensitivity, and Low-FODMAP Diet

Irritable Bowel Syndrome (IBS) is a disorder of gut-brain interaction (DGBI) affecting roughly 10% of the global population, characterized by recurrent abdominal pain associated with altered bowel habits. Review Rome IV diagnostic criteria, IBS subtypes (IBS-C, IBS-D, IBS-M), visceral hypersensitivity, Small Intestinal Bacterial Overgrowth (SIBO), and the 3-phase Low-FODMAP elimination and reintroduction protocol.

Lifestyle DiseasesRead Guide