You might think that if something is wrong with your liver, you would feel it: pain, fatigue, or other clear warning signs. But liver health doesn’t always work that way. Your liver can change slowly over time, and many people do not notice symptoms early on. That means your health may be shifting without obvious clues. Understanding your risk starts with learning how steatotic liver disease, formerly called fatty liver disease, develops and what may influence it.
What is steatotic liver disease, and how common is it?
Steatotic liver disease takes several forms. The most common is metabolic dysfunction-associated steatotic liver disease (MASLD), which happens when extra fat builds up in your liver.
A small amount of fat in the liver is normal. But when fat makes up more than about 5% of your liver’s weight, it may start to affect how your liver works.
It’s estimated that about one in four adults have some level of fat buildup in their liver.
This condition is closely linked to your overall metabolic health, which include factors like:
- Body weight
- Blood sugar levels
- Cholesterol levels
MASLD is often connected to conditions such as:
- Obesity
- Type 2 diabetes
- High cholesterol
It’s important to note that some people have fat buildup with no lasting harm, while others may develop inflammation or scarring (fibrosis) over time. Many people with MASLD remain stable and never develop serious liver problems. The amount of liver scarring is a key factor in predicting long-term liver-related health outcomes.
Why MASLD often goes unnoticed
One of the biggest challenges with MASLD is that it often has no clear symptoms.
When symptoms do happen, they can be easy to miss, like:
- Feeling tired
- Low energy
- Mild discomfort in the upper right side of your abdomen
Even routine lab tests may not tell the full story. Standard liver function tests measure liver enzymes like alanine aminotransferase (ALT) and aspartate aminotransferase (AST). These levels can appear normal even if there are early changes in your liver.
That’s why understanding your risk factors can be just as important as noticing symptoms.
Common risk factors and lifestyle habits to know
Many people who develop MASLD have one or more metabolic risk factors. These are often related to everyday habits, which means they can change over time.
Use this checklist to think about your own risk:
- Higher body weight or fat around the midsection
- Type 2 diabetes or insulin resistance
- High cholesterol or triglycerides
- High blood pressure
- Low levels of physical activity
Your liver plays a key role in how your body uses energy, stores fat, and processes nutrients. That means your liver health reflects your overall metabolic health.
Daily habits can influence this over time, including:
- Nutrition patterns (what and how often you eat)
- Physical activity (how much you move)
- Weight management
Small, steady changes may support your overall health, including your liver.
How to identify your risk when symptoms are unclear
If symptoms are limited or absent, a layered approach can help you better understand your liver health:
- Medical history and risk factors: Your personal and family health history can give important context, especially if you have metabolic conditions
- Routine blood work: Standard tests like ALT and AST are often part of routine care. They provide useful information but may miss early or moderate disease
- Additional labs or scoring tools: Some more advanced liver health tests look at patterns in your lab results to estimate liver health or fibrosis risk. These can offer more context than a single value
- Imaging (when appropriate): In some cases, your healthcare provider may recommend imaging tests, such as ultrasound, to look at your liver more closely
Some newer blood tests take a broader view of liver health. The NASHnext® Advanced Liver Risk Test evaluates multiple blood-based markers and uses them together to estimate your likelihood of liver inflammation and moderate to advanced fibrosis. It looks at patterns across several biomarkers linked to:
- Fat buildup
- Inflammation
- Liver scarring (fibrosis)
Unlike standard enzyme tests like ALT and AST, this type of testing provides a more detailed picture by looking at how different markers work together.
Results are reported in risk categories, which can help you understand where you may fall along the liver health spectrum. This type of blood test may be especially useful if you already have risk factors, such as:
- Type 2 diabetes
- Metabolic syndrome
- Elevated cholesterol
It’s important to remember:
- No single blood test can diagnose MASLD on its own
- Results are not diagnostic and should be reviewed with a healthcare provider
- Follow-up testing, including imaging, may still be needed
Think of these tools as part of a bigger picture, not a final answer.
When to talk to your healthcare provider
MASLD is common and often silent. Your risk is closely tied to your metabolic health, including factors like weight, blood sugar, and cholesterol.
Lifestyle habits play a meaningful role over time, and small changes can support your overall health.
Testing can offer helpful insight, but it works best when combined with your health history and guidance from a healthcare provider.
You may want to check in with a healthcare provider if you:
- Have one or more metabolic risk factors
- Have had abnormal liver tests in the past
- Want to better understand your baseline health
A provider can help you review your risk, interpret test results, and decide on next steps that fit your personal health goals.
Understanding your risk is a powerful step. It helps you stay informed, ask better questions, and make choices that support your long-term health.
