The Western lifestyle has more than halved the sperm count of men since the 1970s, a study recently revealed.
And stress is believed to play a huge role in why male fertility has declined so rapidly in the US, Europe and Australia.
Now experts are recommending men eat more watercress, which is not only hailed as an aphrodisiac but has been shown to reduce stress levels.
Studies have shown the superfood reduces stress-related damage to DNA and includes many nutrients that can help to maintain sperm count levels.
Eating watercress has also been linked with decreased risk of obesity which could also be a contributing factor in the drop in sperm levels.
Watercress can dampen the body's response to stress which is blamed for decreasing male fertility (file photo)
Dr Mark Fogarty believes that increasing watercress intake could be the perfect remedy.
The lecturer in sports and exercise nutrition at the University of Hull told The Express: 'The role of foods such as watercress in our diet is therefore of extreme importance as we've shown it to help dampen the body's response to stress.
'So regardless if you run marathons, swim the channel or simply walk slightly quicker because you're late for the train to work, watercress can help your body deal with the daily stress it is exposed to.
'There are so many weird and wonderful chemicals found in this plant that we've only touched the tip of the iceberg in regard to what it can do for overall human performance.'
Human extinction a possibility
Last week, scientists revealed they had found almost a 60 per cent average decline in total sperm count and a 52.4 per cent average drop in sperm concentration among men.
Researchers at Hebrew University-Hadassah Braun School of Public Health and Community Medicine and the Icahn School of Medicine at Mount Sinai looked