From being male to having an underlying health conditions, a number of factors are known to increase your risk of coronavirus.
But a new study has warned that another factor may increase your risk of severe disease - being bald.
Researchers from West Virginia University have warned that bald men are 40% more likely to end up in hospital with coronavirus.
In the study, the researchers analysed data from 2,000 British men from the UK Biobank - a huge dataset of 500,000 people, collected over the past 14 years.
The men were categorised into four groups - those with no hair loss, those with slight hair loss, those with moderate hair loss and those with severe hair loss.
The analysis revealed that 15% of men with no hair loss were diagnosed with Covid-19, while 17% with slight hair loss were diagnosed with the disease.
However, 18% often the men with moderate hair loss contracted Covid-19, and 20% of those with severe hair loss were diagnosed with the disease.
Overall, this suggests that bald men are 40% more likely to test positive than those with a full head of hair.
The researchers highlight that there could be several other factors at play, including ethnicity and age.
However, this isn’t the first time that a link has been drawn between baldness and coronavirus risk.
Last month, Brown University's Professor Carlos Wambier conducted two studies in Spain which found that a disproportionately high number of men with male pattern baldness were taken to hospital with coronavirus.
The first study found of 71% of the 41 patients examined with Covid-19 in Spanish hospitals were bald, with the background rate of baldness for white men of a similar age to the patients between 31 and 53%.
The second study, which was published in the Journal of the American Academy of Dermatology, found 79% of the 122 male coronavirus patients in Madrid hospitals were bald.
