Lack of energy for exercise is a common problem for folks with so-called long COVID.

New research pinpoints the most likely reason why: diminished capacity to get the heart pumping fast enough to support the effort. The name for this is chronotropic incompetence.

"The amount of aerobic exercise an individual can do is limited largely by the delivery of oxygen by the heart, lung...

It's been known for years that Epstein-Barr virus can trigger multiple sclerosis or drive progression of the degenerative disease, and Swedish researchers think they now understand why.

Some people have antibodies against the common Epstein-Barr virus that mistakenly attack a protein found in the brain and spinal cord, researchers at the Karolinska Institute in Sweden say.

Antibodie...

Two experimental vaccines show promise in protecting against infection with the "mono" virus, which also causes cancer and has been implicated as a potential trigger of multiple sclerosis, a new paper reports.

Tested only in animals so far, the vaccines block two pathways by which the Epstein-Barr virus (EBV) ta...

The mononucleosis virus, Epstein-Barr, has become a major suspect in the search for what causes multiple sclerosis.

Now researchers are raising the next logical question -- can we stop both MS and mononucleosis by preventing Epstein-Barr infections, which occur in 95% of adults?

Epstein-Barr vaccines currently under development by the U.S. National Institutes of Health (NIH...

A one-two punch from science has clearly tagged the mononucleosis virus, Epstein-Barr, as a major cause of multiple sclerosis.

The Epstein-Barr virus (EBV) appears to trigger multiple sclerosis (MS) by tricking the immune systems of some into attacking their body's own nerve cells, a new study indicates.

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For years, researchers have suspected that the Epstein-Barr virus, best known for causing mononucleois, might also play a role in triggering multiple sclerosis. Now a new study strengthens the case.

The study, of more than 10 million U.S. military personnel, found the risk of developing multiple sclerosis (MS) shot...