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  • This month, many countries around the world will be spreading awareness on multiple

  • sclerosis, or "MS". A disease that affects millions of people worldwide. But

  • what exactly is multiple sclerosis? MS primarily affects the central

  • nervous system which consists of the brain, spinal cord and optic nerve. Just

  • about everything you do depends on this system functioning properly, from

  • breathing to moving and even watching youtube videos. And these actions are all

  • facilitated by neurons throughout your body, cells which we've talked about many

  • times in our previous videos. These neurons are able to send signals all

  • throughout the body at incredible speeds, in part because of the fatty

  • coating that surrounds them

  • something called myelin or the myelin sheath.

  • This myelin insulates the impulses and allows the nerve signals to reach their

  • destination, however in the case of MS this is where the issues occur.

  • The immune system is designed to fight off disease from viruses, bacteria,

  • parasites or other agents and does so by distinguishing these things from healthy

  • tissue. But in the case of MS, the immune system ends up attacking the myelin in

  • what is classified as an auto-immune disorder.

  • This process of de-myelination can lead to a build above scar tissue, hence the

  • word sclerosis. The CNS then becomes unable to send and receive signals

  • properly. Messages traveling along neurons may be slowed down, distorted or

  • stopped altogether. Because of the bearing, locations and nature of de-myelination,

  • the symptoms of MS are incredibly diverse. They can range from

  • muscle weakness to decreased coordination, fatigue, vision problems, numbness or even

  • paralysis.

  • Though an MRI scan of the brain to look for lesions or scarring is integral

  • to diagnosis.

  • For some, the symptoms come as acute episodes while others experience more

  • chronic and permanent symptoms, which worsen over time. At this point no true

  • cause or cure is known. While potential links to environmental factors, viral

  • infections and genetics have been found, studies are ongoing and not yet

  • conclusive. And while their has been a lot of work towards not only alleviating some of the

  • symptoms but slowing the progression, sadly these treatments do not work for

  • all MS sufferers. Ultimately, bringing like to this issue in an effort to

  • support and fund research is an incredibly important step to erasing MS.

  • And though many of us will never truly understand the challenges of

  • living with MS,

  • we can work together to raise awareness. We would be so grateful if you could

  • take a moment and pass this video on to your family and friends and join in the

  • effort to end MS.

  • This episode of AsapSCIENCE is supported by 23andMe. 23andMe is a

  • DNA analysis service that allows you to explore your own genes, whether you're

  • interested in discovering a global origins for understand you're health and your

  • risk for disease, be they sure to check out

  • With the help of their DNA kits, connect to your past, learn about your present health and

  • potentially be a part of future genetic research all at

  • And subscribe for more weekly science videos.

This month, many countries around the world will be spreading awareness on multiple


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B1 中級

多発性硬化症 (Multiple Sclerosis)

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    姚易辰 に公開 2021 年 01 月 14 日