‘Salt isn’t the villain for everyone’: US heart doctor explains who should really worry and how it could save lives

A new Instagram post by a US-based heart specialist is challenging one of nutrition’s most familiar villains. Dr Dmitry Yaranov, a cardiologist known online as @heart_transplant_doc, shared a detailed message on Instagram explaining why salt is not universally dangerous, but can be deeply harmful for specific groups of patients.

“I wish more patients understood what salt does to you,” he wrote in the post, which has been widely shared by health professionals and patients alike.

Not an enemy for all, but dangerous for some

In the caption accompanying his post, Dr Yaranov argued that sodium itself is not the problem.


He noted that sodium plays a vital role in nerve function, muscle movement, and blood pressure regulation. The trouble, he explained, begins when salt enters bodies already struggling with certain medical conditions.

“Salt isn’t the villain for everyone,” he wrote, adding that in vulnerable patients, it can become “fuel for disease.”

According to Dr Yaranov, high sodium intake can significantly worsen outcomes for:

• Heart failure patients, where salt contributes to fluid buildup, congestion, frequent hospitalisations, and lower survival rates
• People with resistant hypertension who require multiple medications to control blood pressure
• Those with chronic kidney disease, where sodium accelerates organ damage and complicates fluid balance
• Patients with liver cirrhosis and portal hypertension, where it worsens abdominal fluid accumulation
• Older adults with stiffened blood vessels that can no longer buffer sodium efficiently

He also rejected popular assumptions, writing that salt is not responsible for every high blood pressure reading or sudden fainting episode in otherwise healthy young adults.

View this post on Instagram

A post shared by Dmitry Yaranov, MD | Cardiologist 🫀 (@heart_transplant_doc)

This is not theoretical, it is personal

Dr Yaranov’s message carried a clear emotional undertone.

“If you’re breathless, swollen, hypertensive, or rehospitalized every three months, this conversation isn’t theoretical. It’s personal,” he wrote.

His central point was that medicine should focus less on banning ingredients and more on understanding individual tolerance.

“Medicine isn’t about demonizing ingredients. It’s about knowing who can tolerate what, and who can’t.”

Dr Yaranov is a board-certified cardiologist and serves as the Medical Director for Advanced Heart Failure, Heart Transplant, and Mechanical Circulatory Support at Baptist Memorial Health Care in Memphis, Tennessee.

Originally from Russia, he completed his medical degree at Samara State Medical University in 2010 before moving to the United States for advanced training. He went on to complete his residency at Danbury Hospital, a Yale affiliate, followed by a fellowship in cardiovascular disease at the University of Florida and further specialization at the Cleveland Clinic.

With over a decade of clinical experience, his work focuses on heart failure, transplantation, mechanical circulatory support, and echocardiography.

Public health messaging has long treated salt as a universal threat, but Dr Yaranov’s post reflects a growing shift in medicine toward personalised risk. Rather than promoting strict avoidance for everyone, his message urges patients and clinicians to consider physiology, existing disease, and long-term outcomes.