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Maple Syrup Urine Disease (MSUD) is an inherited metabolic disorder. If untreated, MSUD causes mental retardation, physical disabilities and death. First described as a disease in 1954, it is a rare disorder, believed to be in all ethnic groups worldwide. The national incidence is 1 in 225,000 births.

MSUD derives its name from the sweet, burnt sugar, or maple syrup smell of the urine. The disorder affects the way the body metabolizes (processes) certain components of protein, the three branched-chain amino acids—leucine, isoleucine, and valine. These amino acids accumulate in the blood and become toxic to the brain.


MSUD Family Support Group

Parents seeking information and support prompted the first MSUD Symposium for families and professionals in 1982. It was here that families discussed the need for an organized support group.

In 1983 the first issue of the MSUD Newsletter was distributed throughout the U.S. and Canada. Now mailed around the globe, the MSUD Newsletter provides up-to-date information on the treatment of the disorder, reports on the latest research, diet information, family news and related topics. Treatment has improved, and the future continues to brighten for those with MSUD.

The MSUD Family Support Group, a non-profit organization, now includes families and professionals worldwide. It is a growing organization and continues to develop resources to meet its goals of support, education and advocacy.

The MSUD Family Support Group is dedicated to:

  • Providing opportunities for support and personal contact for those with MSUD and their families.
  • Distributing information and raising public awareness of MSUD.
  • Strengthening the liaison between families and professionals.
  • Encouraging newborn screening programs and research for MSUD.

Melvin Carruth

This letter is a tribute to my brother Melvin Carruth! We believe he is one of the oldest living African Americans with Maple Syrup Urine Disease.

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NBS-MSUD Connect: Your One-Stop Shop For MSUD Resources

NBS-MSUD Connect was launched as part of the Newborn Screening Connect patient registry (NBS Connect) in 2013 through a partnership between the Department of Human Genetics at Emory University, the Maple Syrup Urine Disease (MSUD) Family Support Group and other key stakeholders.

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Cambrooke Therapeutics

Cambrooke Therapeutics continues to expand its line of delicious and nutritious low protein foods to help improve the lives of individuals with Inborn Errors of Metabolism such as MSUD.

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Updates To Nutrition Management Guidelines

The Nutrition Management Guideline for MSUD was first published in 2014. Since that time, there have been reports of new research and experiences that have prompted updates of the guideline.

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Emory Metabolic Camp 2018 Announcement

Join us June 18-23, 2018 for the 24th Annual Metabolic Camp at Emory University in Atlanta, GA!

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From The Chairman’s Desk

As I sit here reflecting on how much the care and treatment of MSUD has changed over the years, my mind goes back to 1978 when our son Keith was born.

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MSUD Advocacy Report

Medical Nutrition Equity Act

The Medical Nutrition Equity Act (MNEA) would require all private insurance plans (state regulated or self-insured/self-funded) and federal health programs, including Children’s Health Insurance Program, Tricare, Medicaid, Medicare, and Federal Employee Health Benefit Plans, to provide coverage for formula and low-protein foods for all children and adults with MSUD.

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The MSUD Family Support Group Is Excited To Announce Their Participation In The Million Dollar Bike Ride

The MSUD Family Support Group is excited to announce their participation in The Million Dollar Bike Ride

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19th Biennial MSUD Symposium

I can’t believe that almost two years have passed and it is time for another MSUD Symposium! I am especially excited about this conference because I’ve built in extra time for social interaction.

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A Child's Life

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