A part of our daily routine could be linked to a form of cancer, studies say.
There are plenty of studies into certain things that might be linked to cancer and there are all kinds of chemicals in food and drink under investigation by scientists.
According to one study, common hot drinks have been linked to oesophageal cancer due to 'thermal injury'.
People shouldn't be too worried - doctors tend to advise against excessive amounts of any substance and a balanced diet is helpful for keeping you healthy.
However, the research into links to cancer is interesting. What are the drinks and how do scientists think they could be harmful to us?
Is drinking hot tea linked to cancer of the oesophagus?
For those not in the know, the oesophagus is simply the big pipe in your throat that takes food from your mouth to your stomach.
Research published in the International Journal of Cancer identified the link between oesophageal cancer and especially hot drinks.
The 2019 study noted that there had been previous studies into a reported "association between hot tea drinking and risk of [oesophageal] cancer".
This study was slightly different, however, and found people in Iran who preferred drinking their tea at or above 60C were subjected to an increased risk of esophageal squamous cell carcinoma (ESCC), a common form of oesophageal cancer.
"Our results substantially strengthen the existing evidence supporting an association between hot beverage drinking and ESCC," the study noted.
How risky is drinking hot tea?
Drinking hot tea is not particularly risky and there is no real reason why you shouldn't enjoy your morning brew.
Cancer Research UK pointed out problems with the 2019 study, explaining: "A person’s risk of oesophageal cancer can depend on many factors and the study didn’t look at all of these.
"The researchers did look at if people had ever smoked or were current smokers, but not how much people had smoked, or for how long. They also didn’t look in detail at their eating habits, which can also affect oesophageal cancer risk."
It also depends on the type of tea you drink.
Cancer Research UK continued: "The people in the study were drinking green or black tea, where in the UK, most people add cold milk to their tea, which will quickly cool it down.
"If you’re leaving your tea to cool for a few minutes before drinking it, even while it’s brewing, or adding cold milk, it’s unlikely that you’re increasing your risk of oesophageal cancer."
What is oesophageal cancer?
According to Cancer Research UK data, there are roughly 9,300 people diagnosed with oesophageal cancer in the UK every year, making it the 14th most common cancer in adults.
It is also cancer found to be more common in men than in women and more prevalent in older age groups. Around 40% of cases are in people aged 75 or over.
