MASLD & MASH Explained
You may have heard the terms fatty liver disease or NASH in the past.
Today, doctors use updated terms:
- MASLD (Metabolic dysfunction–associated steatotic liver disease)
- MASH (Metabolic dysfunction–associated steatohepatitis)
These newer names better describe how metabolic health affects the liver.
What is MASLD?
MASLD occurs when:
➡️ Fat builds up in the liver
AND
➡️ A person has at least one metabolic risk factor such as:
- Type 2 diabetes or prediabetes
- High blood pressure
- High cholesterol or triglycerides
- Extra weight (especially around the abdomen)
MASLD is common and often has no symptoms in early stages.
What is MASH?
MASH is a more serious form of MASLD.
It occurs when:
➡️ Fat buildup leads to inflammation and liver injury
Over time, this can cause:
- Scarring of the liver (fibrosis)
- Advanced scarring (cirrhosis)
- Liver failure
Not everyone with MASLD develops MASH.
Common Symptoms
MASLD
Many people feel normal.
Possible symptoms may include:
- Fatigue
- Mild abdominal discomfort
- Feeling generally unwell
Often, there are no noticeable symptoms.
MASH
As inflammation develops, symptoms may include:
- Fatigue
- Loss of appetite
- Nausea
- Abdominal discomfort
- Unexplained weight changes
In advanced stages:
- Swelling in legs or abdomen
- Yellowing of skin or eyes (jaundice)
- Easy bruising
Common Tests
Doctors may use several tools to evaluate liver health.
For MASLD
Common tests include:
- Blood tests (liver enzymes)
- Ultrasound
- CT or MRI scans
These help detect fat in the liver.
For MASH
Additional tests may include:
- Fibrosis (liver stiffness) testing
- Specialized blood tests
- Liver biopsy (in some cases)
These help determine if inflammation or scarring is present.
Common Treatments
There is no single cure, but treatment can help slow or reverse early disease.
MASLD Treatment
Focus is on improving metabolic health:
- Weight management
- Physical activity
- Healthy eating
- Managing blood sugar
- Controlling cholesterol
- Managing blood pressure
MASH Treatment
Treatment may include:
- Lifestyle changes
- Managing related health conditions
- Medications (in some cases)
- Monitoring for complications
In advanced disease, specialized liver care may be needed.
Why Early Detection Matters
Both MASLD and MASH can develop slowly.
Early care can:
✔ Prevent progression
✔ Reduce complications
✔ Improve overall health
⚠️ Medical Disclaimer
This resource is provided for educational and informational purposes only and is not intended to replace professional medical advice, diagnosis, or treatment. The information presented is general in nature and may not apply to every individual or health situation.
Individuals should consult their physician or other qualified healthcare professional for personalized medical advice, diagnosis, or treatment recommendations related to their specific health conditions and should not begin any new exercise program or change their diet or medications without consulting their healthcare professional.
Call 911 if you are experiencing a medical emergency.