According to the former Nottingham Forest and Bristol Rovers striker, he used to talk to most of his playing mates until the stroke hit him two years after he retired from football.
“Now nobody gets in touch with me,” the 38-year-old said when he appeared in a BBC Four documentary.
The former Zamalek player added “I used to talk with a couple of the boys that I was with in the national team but when the stroke happened, they all said no, because I couldn’t speak.”
Agogo suffered the stroke in January 2015 soon after retiring from football, this subsequently led to Aphasia, which severely affected his ability to use language.
Agogo, who is now cared for by his mother appeared in the BBC Four documentary on Sunday to raise awareness of Aphasia on World Stroke Day.
The former footballer scored 12 goals in 27 matches for the national team between 2006 and 2009.