Multiple sclerosis is a disease that results when the immune system mistakenly attacks the brain and spinal cord. It affects nearly one million people in the U.S. and over 2.8 million worldwide. While ...

The myelin sheaths insulating neurons are damaged in multiple sclerosis. Steve Gschmeissner/Science Photo Library/Brand X Pictures via Getty Images The environment plays a key role in determining who ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) The environment plays a key role in determining who develops multiple sclerosis, and ...

The environment plays a key role in determining who develops multiple sclerosis, and this is evident from twin studies. Among identical twins who share 100% of their genes, one twin has a roughly 25% ...