After more than 15 years of treating heart disease from inside the body, Dr. Sanjay Bhojraj decided it was time to start preventing it from the outside.

The 48-year-old interventional cardiologist from Orange County, California, known as @doctorsanjaymd online, has drawn viral attention for a video in which he lists the top 10 foods he would never purchase and eat again—based on everything he has learned from his near two decades working with heart patients.

“I realized that the conventional medical system was too focused on prescriptions and procedures—and not nearly focused enough on the immense power of diet and lifestyle to transform health,” Bhojraj told Newsweek.

Posted on March 29, the Instagram video shows Bhojraj in his kitchen as he delivers a rapid-fire list of foods that have no place in his family’s pantry. It has since been viewed more than 4.5 million times and liked by more than 52,000 Instagram users. Most viewers responded with applause, calling the cardiologist’s advice both practical and eye-opening.

In the video, Bhojraj outlines the foods he avoids, many of which are often marketed as health-conscious choices in supermarkets but, according to him, are anything but.

Bhojraj’s decision to advocate for better health choices on social media stems from what he describes as a fundamental flaw in modern medicine’s approach to chronic disease.