♪♪>>>ALL RIGHT. WE’RE BACK, NOW. 8:11, WITH WHAT MIGHT BE A NEW FRONTIER IN BATTLE OF THE BULGE. A CONNECTION WITH YOUR DIET AND GENES BUT NOT THE ONES YOU WEAR.>>THEY’RE LEARNING ABOUT DNA AND OTHER BIOLOGICAL MARKERS MAY BE ABLE TO HELP DETERMINE THE FOODS BEST FOR YOUR BODY. HERE AGAIN, JO LING KENT.>>Reporter: THESE DAYS, YOU CAN PERSONALIZE ANYTHING. CLOTHES CRAFTED TO YOUR CUT AND COLOR. A RIDE WHEN YOU WANT IT. AND THE FOOD YOU EAT, BASED ON YOUR DNA.>>CUTTING-EDGE SCIENCE, REVEALS YOUR OPTIMAL DIETARY NEEDS.>>Reporter: COMPANIES OFFER DNA KITS TO TEST HOW YOUR BODY RESPONDS TO DIFFERENT FOODS AND NUTRIENTS. IT’S CALLED NEUTRGENOICS. CONSUMERS ARE SHELLING OUT FOR CHEEK SWABS AND SALIVA TESTS, HOPING TO UNLOCK THE SECRETS OF THEIR GENETIC CODE. HABIT LAUNCHED LAST YEAR. NEIL FOUNDED THE COMPANY, AFTER STRUGGLING WITH WEIGHT GAIN THEMSELVES.>>FATS ARE BAD. NOW, THEY’RE GOOD. ALL THOSE THINGS ARE TRUE. WHICH ONE IS TRUE FOR YOU?>>Reporter: FOR $300, HABIT SENDS USERS A TEST KIT, INCLUDING SWABS AND A CHALLENGE SHAKE, LOADED WITH 950 CALORIES. THE BLOOD SAMPLES TAKEN BEFORE AND AFTER DRINKS THAT SHAKE, TRACKS HOW YOUR BODY RESPONDS TO FATS, CARBS AND PROTEINS.>>YOU LAYER IN YOUR METABOLISM. AND ALL OF A SUDDEN, YOU HAVE A CLEAR PICTURE OF WHAT’S GOING ON INSIDE OF YOURSELF.>>Reporter: HABIT CUSTOMERS ARE OFFERED A COACHING SESSION, WITH A REGISTERED DIETITIAN, THAT CAN RECOMMEND DIET.>>EAT FOOD AS UNIQUE AS YOU ARE.>>Reporter: FOR CUSTOMERS IN SAN FRANCISCO, HABIT SELLS PERSONALIZED MEALS, COOKED IN THEIR KITCHEN AND DELIVERED TO YOUR DOOR, FOR ABOUT $10 TO $15 EACH. MICHELLE LOST SEVEN POUNDS.>>I CHANGED MY WORKOUT ROUTINES. I DIDN’T SEE A BUDGE. I DID HABIT. AND I LOST ABOUT SEVEN POUNDS.>>YOU THINK ABOUT MOVING FROM A FOOD, IT CHANGES EVERYTHING. IT CHANGES THE WAY YOU SHOP AND EAT. AND IT CHANGES THE WAY YOU THINK ABOUT YOUR OWN HEALTH AND WELL-BEING.>>Reporter: DOES IT WORK FOR EVERYONE? MORE STUDY IS NEEDED AND IT’S TOO EARLY TO GIVE DIETARY ADVICE.>>I DON’T THINK IT WILL ANSWER EVERY QUESTION THAT YOU MAY HAVE ABOUT YOUR HEALTH. WILL IT PUT YOU IN THE RIGHT DIRECTION TOWARDS KNOWING WHAT FOODS YOU NEED TO INCREASE? WHAT FOODS, PERHAPS, YOU SHOULD HAVE LESS OF AND WHAT’S THE BEST SOURCE OF PROTEIN OR FATS, ABSOLUTELY.>>Reporter: AND TALK WITH YOUR DOCTOR. TAKING A CLOSER LOOK INSIDE HERSELF DID THE TRICK.>>I FEEL BETTER. I NOTICE I HAVE MORE ENERGY.>>Reporter: IN OUR ONLINE WORLD, IT’S NOT JUST MADE TO ORDER. IT’S WHAT YOU’RE MADE OF.>>HABIT JUST LAUNCHED ITS TEST KIDS NATIONWIDE. EXPERTS SAY, YOU SHOULD CHECK WITH YOUR DOCTOR BEFORE TRYING A NEW TREND LIKE THIS.>>>HERE WITH MORE ON THIS, “TODAY’S” MEDICAL CONTRIBUTOR, DR. NATALIE AZAR. IT’S GENES AND YOUR DIET.>>THE THOUGHT IS THAT INDIVIDUAL VARIATIONS WILL IMPACT THE WAY YOU METABOLIZE FOOD AND ABSORB NUTRIENTS. IT CAN ALSO DETECT ALLERGIES AND SENSITIVITIES TO FOOD. THE IDEA IS THAT YOU’RE TAKING YOUR OWN GENOTYPE AND IT CAN IMPACT SOME CHRONIC DISEASES. THAT’S THE PHILOSOPHY OF IT.>>DO WE KNOW IT WORKS? I FIND OUT MY BODY DOESN’T LIKE PROTEIN. DOES THAT MEAN THAT IF I CHANGE MY DIET, I WILL HAVE WEIGHT LOSS?>>THE BIGGER PICTURE IS THE IDEA OF GENOMICS ANY WAY. IT’S USED IN OTHER FIELDS. THE CONCEPT OF NEUTROGENOMICS IS INNOVAIVE AND EXCITING AND PROBABLY WILL BE A BLOCKBUSTER FOR THE FUTURE. THE FIELD IS IN INFANCY, AS THEY CLAIM MORE STUDY IS NEEDED BEFORE WE CAN SAY THIS WORKS.>>AS THE STUDY CONTINUES AND THEY CONTINUE TO LOOK INTO THIS, WHO MIGHT BE A GOOD CANDIDATE FOR SOMETHING LIKE THIS?>>INTERESTINGLY ENOUGH, I THINK MOST OF US WATCHING THIS PIECE, SAY I WOULD LIKE TO KNOW. AM I PREDISPOSED TO REQUIRE MORE OMEGA 3 OR LESS B-12? THAT’S WHAT THIS BATTERY OF TESTS CAN ACTUALLY GIVE YOU. IN A SENSE, IF WE KNOW YOU NEED OMEGA 3s TO PREVENT HEART DISEASE, AND THIS TEST TELLS YOU YOU NEED TO TAKE MORE, THAT’S THE PRACTICAL APPLICATION OF IT. BUT THE TESTS NEED TO BE VALIDATED. FURTHER STUDY NEEDS TO BE DONE. THERE’S SOME SKEPTICISM IN THE SCIENTIFIC COMMUNITY.>>THAT’S FASCINATING.>>THANK YOU.>>>COMING UP NEXT WEEK ON “TODAY,” A NEW SERIES ON ROUND-THE-CLOCK DIET CLEM