White took part in both practices Saturday after missing the first day of training camp Friday because of an excused absence.
"I'm having personal issues," he said. "They've been handled. I'm happy to be back out here, thankful I have people around me that care about people in general."
White declined to elaborate.
He played sparingly as a reserve last season, and in the final game was carted off the field with a concussion following a chilling helmet-to-helmet collision with Steelers cornerback Ike Taylor. White also suffered a concussion as a senior at West Virginia.
When asked if he had reservations about playing this season, White said: "I love the game of football. I always will. I always have."
A second-round draft choice in 2009, White is one of four quarterbacks in camp and battling for a spot on the roster. Also competing for backup jobs behind Chad Henne are Tyler Thigpen and Chad Pennington.
Coach Tony Sparano said the team was supportive of White's situation.
"We were dealing with some personal health issues with him that we wanted to get checked out," Sparano said. "We did. We were all satisfied and had him back out on the field today, so everything is good, and he's ready to go."