LOS ANGELES (KABC) — With billions of vaccinations administered worldwide, Covid-19 vaccines have proven to be safe and effective.

Previous research has found a link between Covid vaccines and mild heart disease, particularly in adolescent and young adult males.

Now, Cedars-Sinai scientists are learning more about the vaccine’s little-known link to heart disease.

POTS – postural orthostatic tachycardia syndrome – can cause rapid heartbeat, dizziness and other nervous system and heart problems.

Kim Ryberg, now 34, began experiencing POTS shortly after contracting the Epstein-Barr virus at age 12. Since then, she has experienced severe dizziness and fainting spells.

“Every time I woke up, I saw a black cave at the edge of my vision.”

In her late 20s, she says, there were times when it was really bad.

Her doctors say Epstein-Barr’s exposure caused problems with her autonomic nervous system, which controls heart rate and blood pressure.

Dr. Alan C. Kwan cares for POTS patients at the Cedars Sinai Specialty Clinic. Most patients take at least two years and see many doctors before they are properly diagnosed.

He and his team delved into patient health records when he started hearing about people who developed POTS after receiving the Covid vaccine.

“There seems to be little signal linking the Covid-19 vaccines with POTS within 90 days of exposure to the vaccine,” Kwan said.

According to the study data, the risk of developing POTS after vaccination is less than 5 per million doses.

You’re more likely to develop POTS if you’re infected with the coronavirus, even more so than after vaccination, Quan’s study found.

“The risk of getting POTS from the disease is significantly higher, five times higher than from vaccination,” Kwan said.

Kwan’s study found that the covid vaccine not only protects against the disease, but also significantly protects against POTS.

Kwan says people should still be vaccinated.

“This will help protect you and those around you.”

He hopes his research will help connect people with POTS to appropriate specialized care.

Although Ryberg experienced some symptoms after the vaccination, she is confident that the Covid vaccine saved her from the worst.

“I believe that’s what kept me from the hospital when I got sick,” she said. “It’s not so much that I’ve done it before and I can get sick of it.”

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