My LFT is slightly high, but I feel fine”: Doctors explain when borderline liver reports turn dangerous and what should be the immediate preventive measures

A routine blood test comes back with a remark: LFT slightly high. There is no pain. No yellowing of the eyes. No weakness. So it is easy to brush it aside. But the liver rarely shouts in the beginning. It whispers.
Liver Function Tests, or LFTs, measure enzymes like ALT and AST in the blood. When these numbers rise, even slightly, they signal that liver cells may be under stress. In India, doctors are seeing more people with borderline liver reports, often discovered during annual check-ups or corporate health screenings.
Dr Suranjit Chatterjee, Internal Medicine specialist at Apollo Hospital, told TOI Health, “Silent liver diseases are common at the early stages. The liver has a unique compensatory capacity. As a result, liver function test abnormalities may occur much earlier than the appearance of physical symptoms. Borderline elevation of liver enzymes such as ALT and AST should not be taken lightly.”
The absence of symptoms does not mean the absence of damage.

The liver performs more than 500 vital functions. It filters toxins, processes nutrients, produces bile, and regulates blood sugar. It also has an extraordinary ability to regenerate.

This strength becomes its weakness.

Because it can compensate for early injury, a person may lose a significant portion of liver function before noticing symptoms. By the time fatigue, swelling, or jaundice appear, the disease may have already advanced.

According to the Indian Council of Medical Research (ICMR), non-alcoholic fatty liver disease is emerging as a major public health concern in India, especially in urban populations. Studies supported by ICMR suggest that a significant proportion of adults undergoing routine screening show fatty changes in the liver without symptoms.

So when a report shows mildly raised ALT or AST, it may be the first visible sign of a silent process.

Dr Chatterjee notes, “Mild abnormalities in liver function tests resulting from fatty liver disease, obesity, diabetes, medication effects, excessive alcohol consumption, and the use of over-the-counter supplements are increasingly seen among patients attending our centres in India.”

This list reflects modern living.

Sedentary jobs and long screen hours
High intake of refined carbs and fried foods
Rising rates of type 2 diabetes
Social drinking becoming common
Unregulated protein powders and herbal supplements
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The World Health Organization has also highlighted the growing burden of non-alcoholic fatty liver disease globally, closely linked with obesity and metabolic syndrome. In simple terms, the liver is reacting to daily overload.

Not every borderline value signals immediate danger. But patterns matter.

A single mild elevation may settle. Persistent elevation over months, or rising trends, are more concerning. If ALT and AST remain high despite lifestyle corrections, doctors investigate deeper.

Dr Chatterjee cautions, “It is not true that if you feel fine, your liver is fine. If the warning signs are not taken seriously at the early stages, they may gradually progress into liver inflammation and other forms of liver injury.”

Untreated fatty liver can progress to:

Non-alcoholic steatohepatitis (NASH)
Liver fibrosis
Cirrhosis
Rarely, liver cancer
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The transition is slow but real. And it often begins with a number that seems “just a little high.”

The immediate reaction should not be panic. It should be action.

Dr Chatterjee explains, “The first step is to repeat the liver function test after a few weeks. It is also essential to review the medication and alcohol intake.”

Doctors usually advise:

Repeating LFT after 4-6 weeks
Stopping non-essential supplements
Reducing or eliminating alcohol
Reviewing long-term medications
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Sometimes, the enzymes normalize on their own. If they do not, further tests may include ultrasound, viral hepatitis screening, or metabolic evaluation.

The Ministry of Health and Family Welfare under the National Viral Hepatitis Control Program also recommends screening for hepatitis B and C in individuals with abnormal liver enzymes. Early clarity prevents late regret.

Prevention is not dramatic. It is disciplined.

Dr Chatterjee adds, “It is also recommended to ensure a normal body weight, eat a balanced diet with low amounts of fats and processed foods, and perform physical exercises regularly. It is also essential to investigate the causes for the elevation of liver enzymes such as viral hepatitis and metabolic diseases.”

Practical steps include:

Aim for 7-10% weight loss if overweight
Choose home-cooked meals with less oil
Walk at least 30 minutes daily
Limit sugar-sweetened beverages
Avoid self-prescribed supplements
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We spoke to Dr Amit Miglani, Director & HOD – Gastroenterology, Asian Hospital, who explained, “Emergency preventive action is aimed at resolving the causes. It is important to keep the weight healthy, eat a balanced diet with low levels of refined sugars and saturated fats, physical exercise, drinking alcohol in moderation or eliminating this habit altogether and use of over-the-counter drugs that are unnecessary. Repeat testing on time, use of ultrasound tested when recommended and screening of viral hepatitis will detect early progression. Intervention at the borderline stage can be reversed fully at a very early stage, however, action taken late may result in irreversible liver damage that may go without notice.”
Even modest weight reduction can improve fatty liver markers. Clinical studies show that sustained lifestyle changes reduce liver fat and inflammation. The liver responds quickly when treated kindly.

Health reports carry psychological weight. A mildly abnormal value can create silent anxiety.

But perspective matters.

A borderline LFT is not a diagnosis of failure. It is a reminder. It is an early checkpoint that many people never get.

As public health data show rising metabolic diseases in India, early detection through simple blood tests may actually prevent severe outcomes years later. The liver does not demand perfection. It demands consistency.

Immediate medical review is needed if borderline values are accompanied by:

Yellowing of eyes or skin
Severe abdominal pain
Persistent vomiting
Dark urine and pale stools
Unexplained swelling
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These signs suggest more advanced liver involvement. Otherwise, regular follow-up with a physician remains the safest path.

A slightly high LFT is often the body’s earliest warning. It appears before pain, before visible illness, before disruption. Ignoring it may allow silent progression. Addressing it early may reverse the damage entirely.

In a country where lifestyle disorders are rising, a small number on a lab sheet can become a powerful opportunity for change.

Medical experts consulted
This article includes expert inputs shared with TOI Health by:
Dr Suranjit Chatterjee, Internal Medicine specialist at Apollo Hospital, told TOI Health.Dr Amit Miglani, Director & HOD – Gastroenterology, Asian Hospital.
Inputs were used to explain why LFT tests can reveal borderline liver disease and how it can be prevented.