. >> reporter: for georgia clark, knowing which foods are truly gluten-free makes a serious difference for her daughter's health. >> it's not a choice. this is a lifestyle that they have to live now for health reasons. and so i'm choosing to buy products from those manufacturers. and i know other people probably are as well. but having the government put their stamp of approval on it, huge. >> reporter: both have celiac disease, an intestinal disorder in which eating gluten can cause pain, inflammation, and even malnutrition. gluten is found in any products containing wheat, barley and rye. but eating gluten-free has become a fad for millions who don't have the condition, and it's big business. a more than $4 billion industry and growing. you can see gluten-free food everywhere, from the supermarket to the ball fields, even on the menu in many restaurants. a recent survey estimated that one in five americans buys or consumes a gluten-free product. that's far more than the number of people with celiac disease. erin haynes does not have celiac disease, but is a health conscious yoga inst

. >> for georgia clark knowing which foods are gluten-free makes a difference for her daughter's health>> this is not a choice. this is a lifestyle they have to live now for health reasons. so i'm personally choosing to buy products from those manufacturers. i know other people probably are as well. having the government put their stamp of approval on it, huge. >> reporter: both have celiac disease, an intestinal disorder in which eating gluten causes pain and even malnutrition. gluten is found in any product including wheat, barley and rye. but eating gluten-free is a fad and big business. a more than $4 billion industry and growing. you can see gluten-free food everywhere from the super bowl to the ball field, even on the menu in restaurants. a recent survey estimated one in five americans buys or consumes a gluten-free product. that's far more than the number of people with celiac disease. erin hanes doesn't have celiac disease but is a health conscious yoga instructor who supplements with gluten-free food. >> i feel better when i don't have glouten in my body. i can digest easier. i

back to school, clark county, prince george keep the eyes peeled for the yellow buses. georgiaue, this is the camera shot, we have reports there was a stalled truck blocking the westbound lane. we are keeping a close eye. travel slows in virginia out of manassas towards centerville on i-95. we had a vehicle stopped in the hov lanes. that since has cleared. leaving lorton headed out. that is a check of your fox 5 on time traffic. >> julie, thank you. there is ongoing safety alert making sure everyone stays safe inside and outside the classroom. >> there have been 12 pedestrians involved in crashes along pennsylvania avenue between darnell drive and walter's lane and forestville. new $180,000 crossing signal has been installed to make it safer for pedestrians. >> high traffic area, dangerous and dark and needed in the community. >> there are also new signs and flashing lights to warn people about upcoming pedestrian crossing. >> we'll check in at new york how you can help retailers. >> as the nation's capitol plans to commemorate martha washington memorial, e-mail us at mymarchdc