Your liver is the body’s main detox organ. It processes nutrients, medicines, alcohol and waste products, and it also plays a role in the immune system, with specialised immune cells that help filter bacteria and other particles from the blood. You cannot “flush” your liver clean, but you can eat and live in a way that supports it. This guide covers the foods and habits that matter most.
How the liver supports your immune system
Blood from the gut passes through the liver before reaching the rest of the body. Immune cells in the liver, called Kupffer cells, help capture and clear bacteria and debris from this blood. The liver also makes proteins involved in the immune response. Keeping the liver healthy therefore supports both detoxification and immunity. Learn more about how the liver processes substances in our guide to phase 1 and phase 2 liver detox pathways.
Foods that support liver health
- Cruciferous vegetables: broccoli, Brussels sprouts, cabbage and kale contain compounds that support the liver’s detox enzymes.
- Leafy greens: spinach, rocket and chard provide folate and antioxidants (see how leafy greens support liver detox).
- Berries and citrus: rich in vitamin C and polyphenols, which also support immune function.
- Coffee: moderate coffee drinking is consistently linked with a lower risk of liver disease in observational studies.
- Oily fish, nuts and seeds: sources of omega-3 and other healthy fats.
- Whole grains, beans and lentils: fibre supports a healthy gut, which reduces the load on the liver.
- Garlic, onions and beetroot: flavourful additions with beneficial plant compounds (see beetroot juice for liver detox).
Our full list of liver detox diet foods goes into more detail.
What to limit
- Alcohol: the biggest controllable risk to the liver.
- Sugary drinks and excess fructose, which contribute to fat build-up in the liver.
- Ultra-processed food and excess calories, linked with fatty liver disease.
- Unnecessary supplements and high-dose herbal products, some of which can harm the liver.
- Exceeding the recommended dose of paracetamol (acetaminophen).
A sample liver-friendly day
- Breakfast: porridge with berries and ground flaxseed, coffee or green tea.
- Lunch: lentil and vegetable soup with wholegrain bread.
- Snack: an orange and a handful of walnuts.
- Dinner: baked salmon or tofu with roasted broccoli and quinoa.
Lifestyle habits that help
- Keep a healthy weight; even modest weight loss can reduce liver fat in people who are overweight.
- Exercise regularly; both aerobic activity and strength training help.
- Sleep well; see how your body detoxes while you sleep.
- Get vaccinated against hepatitis A and B if advised, and practise safe sex.
- Do not share needles or personal items such as razors.
What about liver cleanses and supplements?
There is little evidence that liver “cleanse” kits or detox products improve liver function in healthy people (NCCIH), and some herbal supplements have been linked to liver injury. Read the warning signs in liver detox cleanse gone wrong.
When to see a doctor
Seek medical advice if you notice yellowing of the skin or eyes, dark urine, pale stools, persistent tiredness, itching, or pain in the upper right side of the abdomen.
Frequently asked questions
How can I cleanse my liver naturally?
Limit alcohol, eat plenty of vegetables, fruit and whole grains, keep a healthy weight, stay active and avoid unnecessary supplements.
Does a liver detox boost immunity?
A healthy liver supports normal immune function, but no detox product has been shown to “boost” immunity. See ways to support immunity.
This article is for general information and is not a substitute for medical advice.
