Michelle Obama appears actuality cook show to promote healthy eating

Michelle Obama made an appearance on an episode of Iron Chef America show to endorse healthy eating for children.

The mum-of-two, who became the only US first lady to appear on a actuality television show, stressed on the need to cut down childhood obesity through healthier meals, better school lunches, the use of farmers' markets and do exercises.

Michelle further brought with her a secret ingredient that she later exposed were sweet potatoes from the White House garden.

"And now we're expanding the tours of the garden to any public [state] schoolchildren that come to Washington DC, and we're doing those on a usual basis, and it's just been a wonderful educational addition," she added.