This one is personal.

Amid rising evidence of football’s lasting impact on players’ physical and mental health, new findings suggest the sport may be adversely affecting their sexual health, too.

Players who suffered concussion symptoms were more likely to experience erectile dysfunction, according to the study, published in JAMA Neurology.

Harvard researchers surveyed more than 3,400 former football players in the US, asking them about medication for low testosterone or erectile dysfunction.

They found that players with more concussion symptoms were twice as likely to report low testosterone and erectile dysfunction, compared with those players who had fewer symptoms.

Study authors think the results may be due to a hormone production gland located at the base of the brain, which could be impacted by concussions.

Add these findings to the concerning lineup of health complications linked with the high-impact sport, including depression and dementia. The potentially deleterious effects of football injuries were highlighted over the weekend by former NFLer Le’Ron McClain, who unleashed an alarming string of tweets about his mental health.

“I have to get my head checked. Playing fullback since high school. Its takes too f–k ing much to do anything. My brain is f–k ing tired,” McClain wrote. “@NFL i need some help with this s–t. Dark times and its showing. F–king help me please!!”

McClain, 34, played in the NFL from 2007 to 2013, three years before the league acknowledged that there was a connection between football and chronic traumatic encephalopathy (CTE).

He tagged the NFL, tweeting: “I need help and i need the process to speed the f–k up.”