More than half of the touring side to Australia are older than 30, including key players Ian Bell (31), James Anderson (31), Kevin Pietersen (33) and Swann (34).
But Swann, who has 248 Test wickets from 57 matches, said any "Dad's Army" jibes were misplaced.
"I don't think we need to worry about the age of the team -- I think I'm the oldest," he said on the England and Wales Cricket Board website.
Yorkshire trio Joe Root, Jonny Bairstow and Gary Ballance, Durham all-rounder Ben Stokes and Steven Finn add a youthful edge to the squad and Swann said: "I think we've got an exciting blend of youth and experience at the minute.
"That's one of the reasons why I'm confident going into this Ashes series."
Swann revealed that England's tofu and goji-infused diet, which Australian media mercilessly attacked when the dietary demands became known on Friday, was partly motivated by the ageing squad.
"It's all very good healthy stuff so I'm surprised it's raised so many snooty questions to be honest because let's face it, healthy eating is the way forward."
Australia are no spring chickens themselves and could line up for the first Test next week in Brisbane with five 30-somethings, including Michael Clarke (32), George Bailey (31), Ryan Harris (34), Chris Rogers (36), and Brad Haddin (36), who have all been in good form.
