While it’s true that tea and other tannin-rich drinks can impact iron absorption, in truth, it’s not something you need to worry too much about unless you’re at risk of low iron.

“Long-term studies in countries like the UK suggest that, on average, consumption of tannins and other compounds that can affect iron absorption don’t actually have a big impact on iron status,” explains nutritionist Bridget Benelam from the British Nutrition Foundation.

“The most important thing seems to be having a healthy diet including a range of iron-rich foods. However, if you have been diagnosed with low iron status or iron deficiency then you may be advised to cut back on tea to help you increase your iron absorption.”

This includes people who may be at risk of iron deficiency or low iron, such as vegans, vegetarians, menstruating women or those suffering with irritable bowel syndrome.

Here's why drinking a cup of tea with your breakfast or healthy snack might be making it less nutritious