Chris and host Steph were later joined by Doctor Pete Taylor, who discussed possible symptoms of an underactive thyroid.
The doctor said the condition was usually something that develops slowly and urged people who might be concerned to seek help from a GP.
“I have to say I’m embarrassed about it, so I ignore it,” the Sky Sports regular admitted.
“Even though other people might mention it, I go, ‘Oh no, I’m fine’.”
Steph’s Packed Lunch airs weekdays from 12.30pm on Channel 4.