Doctor says 1 piece of meat is the 'most anti-ageing food in the world'

In the hopes of living well for longer, most health-conscious people turn to , antioxidant-rich teas, and so-called like chia seeds. However, Dr Eric Berg claims that a far more powerful food is available - especially to meat eaters.

"The number one most anti-ageing food is not kale, it's not green tea, and it's definitely not chia seeds," the well-known health educator said in one of his videos. Posting to Instagram, Dr Berg said: "The most anti-ageing food in the world is actually grass-fed liver." He elaborated, saying "it's loaded with all B vitamins, zinc, copper, co-enzyme 10" and other goodies.

Rich in vitamin A, Dr Berg said the vitamin is "very important for your eyes, the thyroid and your immune system" - and your skin.

The doctor also highlights the presence of heme iron, which can play a vital role in preventing anaemia.

Along with this, grass-fed liver is rich in vitamin K2, vitamin E, and even vitamin D.

What's more, the amino acids and collagen found in liver can support joint and skin health as the body ages.

Despite its many advantages, liver has long had a reputation as an outdated or unpalatable dish, often overlooked in favour for trendier wellness options.

However, Dr Berg insists it's time to rethink that. "You can look at liver like a powerful vitamin mineral supplement," he said.

But, according to dietitian Lisa Hodgson, there is a risk of consuming too much liver that could lead to vitamin A toxicity.

On Medical News Today, Hodgson verified that vitamin A toxicity can lead to:

• Liver damage
• Pressure on the brain
• Vision problems
• Skin changes
• Bone pain

Copper toxicity is also a risk if you eat too much liver, which can result in:

• Loss of red blood cells
• Kidney failure
• Heart failure
• Liver disease
• Brain damage

Liver is also "not suitable for pregnant people or those with gout"; those who are going to eat liver are advised to eat in moderation.

By being sensible, the risks of toxicity are greatly reduced, and liver should still be enjoyed as part of a balanced, healthy diet.

A healthy diet includes plenty of fruits and vegetables, protein - such as pulses and beans - and some dairy or dairy alternatives, the NHS says.