Harvard gastroenterologist recommends green tea, coffee, beetroot juice for fatty liver

Your liver is working right now—filtering blood, breaking down fats, neutralizing poisons your body encounters every day. It is, in many ways, the organ that keeps you alive without you thinking about it. But modern life has a way of overwhelming it. Irregular eating, sedentary hours, processed foods—these habits accumulate in the liver as fat, a condition doctors call non-alcoholic fatty liver disease, or NAFLD. It affects millions globally, and it is largely preventable through diet.

Dr. Saurabh Sethi, a gastroenterologist trained at three of the world's most rigorous medical institutions—AIIMS in India, Harvard, and Stanford—recently posted a video on Instagram laying out three drinks he prescribes to patients struggling with fatty liver. The recommendations are simple, accessible, and backed by published research. They are green tea, coffee, and beetroot juice. What makes them worth attention is not that they are exotic or expensive, but that the science supporting them is real.

Green tea works because it contains catechins, particularly a compound called EGCG. These molecules have been shown in clinical studies to improve the liver enzymes that doctors measure to assess organ health, and to reduce the accumulation of fat within liver cells. A peer-reviewed study on green tea extract therapy found that patients with non-alcoholic fatty liver disease who received the treatment showed measurable improvement across multiple markers—metabolic, chemical, inflammatory, and radiological. The mechanism is straightforward: green tea is loaded with polyphenols, plant compounds with antioxidant and anti-inflammatory properties that protect cells from damage. Catechins, one of the main flavonoids in green tea, have been studied for their effects on aging, cancer prevention, diabetes, and bacterial infection. In the context of the liver, they function as a shield.

Coffee, perhaps surprisingly, carries similar protective power. Research titled "Coffee and Liver Disease" documents that regular coffee drinkers show improvement in the liver enzymes that signal organ stress—ALT, AST, and GGTP. More striking: people drinking more than two cups daily who already have liver disease show lower rates of fibrosis and cirrhosis, lower rates of hepatocellular carcinoma, and decreased overall mortality. The active ingredient appears to be chlorogenic acid, or CGA, which can modulate how the body processes glucose and may slow the development of fatty liver disease itself. Sethi's caveat is important: choose organic coffee and avoid sugar. Instead, he suggests a touch of honey, monk fruit, stevia, or erythritol—sweeteners that do not spike blood glucose the way refined sugar does.

Beetroot juice rounds out the trio. It contains betalains, pigments that function as powerful antioxidants, protecting liver cells and reducing fat deposition. A randomized controlled trial comparing beetroot juice to the Mediterranean diet found that beetroot juice alone showed promise as a treatment for non-alcoholic fatty liver disease in adults. But here, too, moderation matters. Beetroot juice is naturally sweet, and drinking it in excess could introduce more sugar than the liver can process, negating the benefit. The goal is not to flood the system but to introduce these compounds in measured doses.

What emerges from this advice is a pattern: the liver responds to antioxidants and anti-inflammatory compounds. It does not need expensive supplements or dramatic interventions. It needs the things that have always worked—tea, coffee, vegetables—consumed thoughtfully and consistently. For anyone with fatty liver disease or at risk of developing it, these three drinks represent a starting point, not a cure. But they are a starting point grounded in evidence, recommended by a doctor trained in some of the world's most demanding medical programs. The next step, as always, is to speak with your own physician before making changes to your routine.