About World Mitochondrial Disease Week

World Mitochondrial Disease Week, held from 14 to 20 September 2026, raises awareness about mitochondrial diseases (mito). It aims to improve the lives of people affected by mito and to increase awareness among doctors and the general public.

World Mitochnodrial Disease logo
A human body cell with two mitochondria in it marked. A text 'Mitochondria...the powerhouse of the cell' appears above it.

What is Mitochondrial Disease?

Most people have never heard of mitochondrial diseases. Once considered rare, it is now thought to affect 1 in 5000 people, making it the second most commonly diagnosed, serious genetic disease after cystic fibrosis. Researchers have discovered links between mitochondrial dysfunction and other conditions including Alzheimer’s disease, Parkinson’s disease, diabetes, cardiac issues and some cancers.

Scientists believe that by focusing on mitochondrial dysfunction, they may be able to devise effective treatments and potential cures for mito and help the millions of people who suffer from the above-mentioned diseases.

Mark your calendars for the 14 - 20 September 2026

and take part in World Mitochondrial Disease Week 2026!

Be creative and share with each other about Mito Week, spread the word amongst your friends, family and others. Post your events using the form on our website and use social media to make your personal Mito Week a success, don’t forget to use the official hashtags #WorldMitoWeek2026 and #PuttingMitoOnTheMap so everyone can see your contribution!

World Mito Week 2026 Theme

This year’s official World Mitochondrial Disease Week theme is:

Putting Mito on the Map

Mitochondrial disease affects people in every part of the world, yet awareness, understanding, and recognition of mito remain limited in many communities. This year’s theme focuses on making mitochondrial disease more visible globally by amplifying patient voices, strengthening awareness, supporting advocacy, and connecting people across borders. “Putting Mito on the Map” is about ensuring that no person living with mito feels unseen, unheard, or isolated, no matter where they live.

TThe campaign highlights the importance of global collaboration between patients, families, healthcare professionals, researchers, organisations, and advocates to improve diagnosis, care, support, and research. Through shared stories, awareness activities, education, and community action, World Mitochondrial Disease Week aims to help make mito recognised, understood, and prioritised worldwide.

A green banner with a bright illuminated outline of a human body in the center. A text Illuminate Tomorrow: Revitalise your energy appears below it.

The Global Mito Map

Mitochondrial disease affects people everywhere and now, for the first time, you can see it!

The Global Mito Map brings this year's theme, Putting Mito on the Map, to life by creating a visual picture of the worldwide mito community. Through patient stories, organisations, events, awareness activities, research projects, and Light Up for Mito locations, the map showcases the people, places, and initiatives helping to raise awareness and drive change. As more pins are added, the map becomes a powerful reminder that mito is a global issue affecting communities around the world. Together, we can make mitochondrial disease more visible, recognised, and understood.

Every pin tells a story and every contribution helps Put mito on the Map.

Place your pin. Join the movement.

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What the pins mean:

Patient Stories

Real experiences from people living

with mito around the world

Patient Organisations

The groups and networks supporting

the mito community globally

Light Up for Mito

Landmarks, buildings, and homes

lighting up green in solidarity

Research & Collaborations

Scientific work and partnerships advancing

mito understanding

WMDW Events & Awareness Activities

What's happening near you during Mito Week

The map grows with every contribution.

As organisations, advocates, patients, families, and researchers add their

pins, it becomes something bigger than a campaign tool

- a living, real-time picture of a global community refusing to be overlooked.

Add your pin and Put mito on the map!

Key messages

1

Mitochondrial disease affects people everywhere

Mitochondrial disease affects people of all ages, backgrounds, and communities across the globe. There are hundreds of different types of rare mitochondrial diseases, many of which are individually rare or ultra-rare. Collectively, an estimated 1 in 5,000 people live with a mitochondrial disease, equivalent to approximately 1.5 million people worldwide.[1] Despite this, awareness and understanding remain limited in many countries, and families often face long diagnostic delays, uncertainty, and a lack of support. On average, people with a rare disease wait five to seven years for a correct diagnosis, a reality that many in the mito community know too well.[2] Patient organisations in countries across the globe are working to change this, offering support, advocacy, and connection to those who need it most. Increasing awareness helps ensure more people affected by mito are recognised, understood, and connected to the care and community they need.

2

Awareness leads to understanding and change

Awareness is a powerful step toward improving the lives of people living with mitochondrial disease. Many individuals spend years searching for answers before receiving a diagnosis, often seeing multiple specialists along the way. Greater awareness among healthcare professionals, policymakers, educators, and the public can help improve understanding of mito, encourage earlier diagnosis, strengthen support systems, and increase investment in research.

Mitochondrial disease can affect any organ, at any age, with any symptom making it one of the most challenging conditions to recognise.[3] But when healthcare professionals recognise the symptoms, lives change. Better awareness creates opportunities for meaningful and lasting change.

3

Every voice helps put mito on the map

Putting mito on the map starts with people. Every patient story, awareness activity, fundraising event, social media post, and conversation helps bring mitochondrial disease into a greater public view. Visibility matters because many people affected by mitoaffected by mito feel isolated or misunderstood. Research shows that patients with rare diseases experience significantly higher rates of anxiety and depression, in part due to the difficulty of obtaining a diagnosis and finding others who understand their experience.[4] But when communities speak up, things change.

Patient organisations across the globe are working tirelessly to amplify these voices, connect communities, and ensure that mito is recognised in every country, every healthcare system, and every conversation about rare disease.

Together, we are putting mito on the map one story, one event, and one connection at a time.

4

Progress comes through collaboration

Progress in awareness, care, support, and research depends on collaboration across the global mito community. Patients, families, healthcare professionals, researchers, advocates, and patient organisations each play a vital role in advancing understanding and improving outcomes for people affected by mitochondrial disease. By sharing knowledge, resources, experiences, and expertise across countries and communities, we can strengthen advocacy efforts and accelerate meaningful progress together. No single country, organisation, or individual can put mito on the map alone but together, we can.

5

This is a global movement

The movement to put mito on the map is truly global. Across the world, patient organisations, researchers, healthcare professionals, and advocates are working together to raise awareness, improve access to diagnosis, and push for better care and research funding. From national campaigns to community fundraisers, from clinical networks to social media advocacy, people everywhere are finding ways to make mito more visible. No one should face this disease feeling alone or unseen, and through the collective power of this global community, more and more people are finding connection, support, and hope. World Mitochondrial Disease Week is one moment in that wider movement: a time to come together, amplify our voices, and remind the world that mito matters.

6

The future of mito is being written now.

Advances in genetic research, newborn screening, and emerging therapies are bringing new hope to the mito community. Research into mitochondrial replacement therapy, gene therapy, and targeted pharmacological treatments is accelerating but progress depends on continued investment, global collaboration, and the participation of patients and families.[6] Studies suggest that earlier diagnosis through expanded newborn screening could significantly improve outcomes for children born with mitochondrial disease.[7] By putting mito on the map, we help ensure that research funding follows, that clinical trials reach more people, and that the next generation living with mito has more options, better care, and a brighter outlook. The future of mito depends on the actions we take today and every patient, advocate, and researcher is part of writing that story.

References

The following sources informed the statistics and claims included in this document. Organisations using these key messages are encouraged to verify figures against the most current published data and supplement with locally relevant statistics where available.

[1] Gorman GS, et al. Prevalence of nuclear and mitochondrial DNA mutations related to adult mitochondrial disease. Ann Neurol. 2015;77(5):753–759. [Estimated 1 in 5,000 prevalence]

[2] Rare Disease UK / EURORDIS. The Voice of 12,000 Patients: Experiences and Expectations of Rare Disease Patients on Diagnosis and Living with Their Condition. 2009. [Average diagnostic delay of 5–7 years for rare disease patients]

[3] Mitochondrial Disease Foundation. What is Mitochondrial Disease? Available at: www.mitoaction.org [Any organ, any age, any symptom]

[4] Bogart KR, Rottenstein A, Loewy M, Supples M. Patients with rare diseases experience higher rates of anxiety, depression and social isolation. Orphanet J Rare Dis. 2019. [Mental health impact in rare disease]

[5] EURORDIS – Rare Diseases Europe. www.eurordis.org; Mitochondrial Disease Consortium. www.rarediseasesnetwork.org [International collaborative networks]

[6] Parikh S, et al. Patient care standards for primary mitochondrial disease: a consensus statement from the Mitochondrial Medicine Society. JIMD Rep. 2017;32:1–97. [Emerging treatments and research priorities]

[7] Rahman S. Mitochondrial disease and neurological dysfunction. Cold Spring Harb Perspect Biol. 2021. [Newborn screening and early diagnosis outcomes]

Events

TK2d Awareness Day

Save the Date for TK2d Awareness Day - Tuesday 9 September

TThymidine kinase 2 deficiency (TK2d) is a debilitating and life-threatening genetic disease that causes progressive and severe muscle weakness.Many patients lose the ability to walk, eat, and breathe independently.

1 in 5,000 people have some form of this genetic mitochondrial disease. Prevalence of TK2d itself is still being researched.

Join us in raising awareness for TK2d!

LHON Awareness Day

LHON logo

Mark your calendars for LHON Awareness Day - Friday 19 September!

LHON stands for Leber’s Hereditary Optic Neuropathy or Leber Optic Atrophy. It is a type of mito caused by a change in the function of mitochondria, which are the energy producing organelles.

In LHON the optic nerve is particularly vulnerable to mitochondrial defects because of the high-energy requirements and the need to keep the retina transparent to light.

LHON has a prevalence of 1/25,000 to 1/50,000 and it is more frequent in males.

Help us shine a light on LHON, which affects many lives.

Light Up for Mito

On Saturday 20 September, landmarks, buildings, and monuments around the world lit up green to shine a light on mitochondrial diseases.This powerful global display raises visibility, sparks conversations, and shows solidarity with the mito community.

How You Can Take Part

Invite a local building or monument to join the next Light Up for Mito campaign. Use our editable invitation letter to make your request simple and effective.

Want to spread the word even further? Personalise our press release and share it with your local media to help raise awareness in your area.

See who’s lighting up

Check out our global map to find participating locations or add your own. Let’s fill the world with green and raise awareness together.

Together we can shine a light on mitochondrial diseases. Every light matters. Every voice helps. Join us this September and be part of something that makes a difference.

This beautiful visual spectacle aims to spark conversations, raise awareness, and ignite a sense of solidarity within our communities.

Join us and ask your local monuments to participate in the campaign.

Raise awareness by sharing your photos on social media using #LightUpForMito and #WorldMitoWeek2026

Resources

Download our materials to help you raise awareness!

Toolkit

World Mito Week 2026 Logo

Social Media Posts

Social Media Covers

Light Up for Mito Toolkit

Light up for Mito Logo

Light up for Mito Posts

Light up for Mito Posters

Light up for Mito T-shirt

Get involved

Make a difference during the World Mitochondrial Disease Week 2025 by actively participating in or organising a Mito Week event.

Every contribution counts towards making a long-lasting change!

Whether you host a small or big gathering, start a local support group, or find unique ways to raise awareness about mitochondrial diseases, let's spread the word and make 14 - 20 September an unforgettable week!

How else can you get involved?

  • Share our logo
  • Use mito resources and translate/adapt them to your digital channels
  • Share your activities on the social channels
  • Get involved in hosting your Light Up for Mito - read more here
  • Get involved in TK2d Awareness Day
  • Get involved in LHON Awareness Day
  • Use the official #WorldMITOWeek2026 and #DecodeTheMitoPuzzle on social media
  • Spread the word and make 14-20 September a memorable week!

Spread the word and make 14 - 20 September a memorable week!

Members

World Mitochondrial Disease Week 2026 was hosted by International Mito Patients (IMP). We support the efforts of our members around the world to raise as much awareness as possible!

This logo is a link to the AEPMI website. This logo is a link to the DGM website. This logo is a link to the Lily Foundation website. This logo is a link to the LHON website. This logo is a link to the Mito Action website. This logo is a link to the BOKS website. This logo is a link to the AMMi website. This logo is a link to the Mito Foundation website. This logo is a link to the VKS website. This logo is a link to the Mito Canada website. This logo is a link to the Mitofin website. This logo is a link to the POLG Foundation website. This logo is a link to the Mitocon website. This logo is a link to the Spierziekten-Nederland website. This logo is a link to the UMDF website. This logo is a link to the 'Bulgaria - we make a difference' Facebook group. This logo is a link to the Oogvereniging website. This logo is a link to the Muscular Dystrophy UK website.
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