A popular doctor is speaking out about weight bias in medicine, sharing an example of a young man who he believes had undiagnosed Lyme disease, and that his symptoms went ignored. .

But Varshavski says he suspected the man was too young for that diagnosis. After investigating further, he diagnosed the patient with Lyme disease.

After the first doctor's diagnosis, Varshavski says, the patient was sent home to be treated with over-the-counter meds.

While it treated the rash, the patient told Varshavski it didn't ease the joint and muscle pain. .

Next, the man returned to his doctor to report he wasn't getting better, and the doctor ordered X-rays, but still told the patient the most likely cause of his symptoms was weight, Varshavski said. .

That something, Varshavaski said, was Lyme disease.

Two weeks later, both tests came back positive and the man's symptoms had disappeared.