Can fibromyalgia or CFS lead to increased risk of other diseases?Â
In the United Kingdom, healthcare professionals view fibromyalgia and myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) as primary conditions that, while not inherently “progressive” or life-threatening, can increase the risk of developing certain secondary health issues. These risks are often not caused by the illnesses themselves, but rather by the systemic impact of chronic pain, limited mobility, and long-term physiological stress on the body. The NHS and 2021 NICE guidelines emphasise that maintaining a proactive relationship with your GP is essential to monitor these “secondary risks” and ensure that your overall long-term health is protected while managing your primary symptoms.
What We’ll Discuss in This Article
- The impact of sedentary lifestyle on cardiovascular healthÂ
- The link between central sensitisation and “Secondary Pain” conditionsÂ
- Metabolic health: The risk of Type 2 Diabetes and weight gainÂ
- Bone health and the role of Vitamin D and mobilityÂ
- The “Stress-Immune” connection and susceptibility to infectionsÂ
- Managing mental health: The risk of clinical depression and anxietyÂ
Cardiovascular Health and the “Activity Gap”
The most significant secondary risk for people with ME/CFS or fibromyalgia is related to cardiovascular health. Because these conditions often make traditional exercise difficult or impossible due to Post-Exertional Malaise (PEM), patients can spend long periods in a sedentary state.
Over many years, a lack of cardiovascular “conditioning” can lead to:
- Increased Blood Pressure:Â High blood pressure (hypertension) can develop if the heart and blood vessels are not regularly challenged.Â
- Reduced Circulation:Â Lowered activity levels can lead to poor circulation, particularly in the legs.Â
- Heart Health: The NHS advises that a sedentary lifestyle is a major risk factor for heart disease.Â
In the UK, the focus is on “lifestyle pacing”, finding the tiny amounts of movement that stay within your “energy envelope” but still provide basic support for your heart and lungs.
The “Secondary Pain” Trap
Because fibromyalgia involves central sensitisation, where the brain’s “volume knob” for pain is turned up, people with the condition are at a higher risk of developing other chronic pain syndromes. The brain becomes “better” at processing pain, making it more likely to develop conditions like:
- Irritable Bowel Syndrome (IBS):Â There is a high overlap between fibro and IBS, as the same nervous system sensitivities affect the gut.Â
- Chronic Migraines:Â Sensitisation often extends to the nerves in the head and neck.Â
- TMJ (Jaw Pain):Â Increased muscle tension (“guarding”) often leads to teeth grinding and jaw dysfunction.Â
Metabolic Health and Weight Management
Many medications used to treat fibromyalgia, such as certain antidepressants or nerve-pain agents, can have weight gain as a side effect. Combined with reduced mobility, this can increase the risk of metabolic issues:
- Type 2 Diabetes:Â Weight gain and a sedentary lifestyle are primary drivers of insulin resistance.Â
- Metabolic Syndrome:Â This is a combination of diabetes, high blood pressure, and obesity that puts a significant strain on the body.Â
In 2026, UK GPs are encouraged to perform regular “Structured Medication Reviews” and blood glucose monitoring for patients on long-term fibromyalgia prescriptions to mitigate these risks early.
Bone Health and Vitamin D
People with ME/CFS and fibromyalgia are often “sunlight-averse” due to sensory sensitivities, or they may spend a lot of time indoors. This leads to chronic Vitamin D deficiency.
Vitamin D is essential for absorbing calcium. Without it, and without the “loading” of bones through regular walking or standing, there is an increased risk of osteopenia (low bone density) or osteoporosis. In the UK, the NHS recommends that all people with limited mobility take a daily Vitamin D supplement to protect their bone health.
Conclusion
Fibromyalgia and ME/CFS do not “turn into” other diseases, but the lifestyle changes they force upon you can create a higher risk for cardiovascular, metabolic, and bone-related issues. The key to long-term health in the UK is preventative screening. By ensuring you have annual blood tests for cholesterol and blood sugar, maintaining your Vitamin D levels, and using “micro-pacing” to keep your heart and bones active without triggering a crash, you can significantly reduce these secondary risks. Protecting your health is about more than just managing your daily pain; it is about ensuring that your body remains resilient for the years to come.
If you experience severe, sudden, or worsening symptoms, call 999 immediately.
Does fibromyalgia cause cancer or MS?Â
No. There is no evidence that fibromyalgia or ME/CFS increases the risk of autoimmune diseases like MS or life-threatening conditions like cancer. However, because symptoms overlap, it is important to have new symptoms checked.
Why does my GP want to check my cholesterol?Â
Because chronic illness can make you less active, your GP wants to ensure that your “internal” health markers, like cholesterol and blood pressure, stay in a safe range.
Can I prevent osteoporosis if I can’t walk much?
Yes. Taking Vitamin D and Calcium supplements, and performing very gentle “resistance” exercises (like squeezing a soft ball or lifting tiny weights while seated), can help maintain bone strength.
Are people with CFS more likely to get the flu?Â
Many patients feel their immune system is “weak,” but research is mixed. It is more accurate to say that if a person with ME/CFS gets an infection, the impact on their body is much greater, often leading to a prolonged relapse.Â
Can chronic pain lead to heart problems?Â
Long-term pain is a form of chronic stress, which keeps cortisol levels high. Over many years, high cortisol can impact cardiovascular health, which is why stress reduction is so important.Â
Is weight gain inevitable?Â
Not necessarily. Focusing on a nutrient-dense, Low-GI diet can help maintain a healthy weight even when your ability to exercise is very limited.Â
Should I be screened for diabetes?Â
If you have a high BMI or are taking medications like pregabalin or gabapentin, it is wise to have your HbA1c (average blood sugar) checked annually.Â
Authority Snapshot (E-E-A-T Block)
This article provides a medically accurate overview of the long-term health considerations for people with fibromyalgia and ME/CFS within the UK. It was prepared by the MyPatientAdvice team and reviewed by Dr. Stefan Petrov to ensure alignment with current NHS standards and the 2021 NICE guidelines. The goal is to encourage proactive, preventative healthcare.
