and daniel fabricant is with the industry trade group, the natural products association.an the f.d.a.'s division of dietary supplements from 2011 to 2014. pieter, let me start with you. what did your study find? >> well, what we found was that yet another still lappet has appeared in supplement. we've seen a plethora of things trying to replace ephedra since banned in 2004 and we found a new stimulant extremely similar to amphetamine. >> sreenivasan: daniel, when at the fda you did your own study. why is it still on the shelves and not pulled then? >> the study was initiated at the end of 2013. the types of studies evidentiary burden, there has to be due process so it was a scientific study not necessarily done for regulatory purposes but started during my time and in all fairness should have continued the work and the fda should have the authority to take the product off the market. >> sreenivasan: they don't have the authority now? >> they do. >> sreenivasan: the fda said "it is true under current law the agency faces a high burden before we can take enforcement action

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when we asked for comment, giersch's lawyer says daniel continues to protect the children from negativity and will not engage in the false media fabricationsd others. she's established an organization with that goal that no other children have to go through what hers are. it's hard to believe. >> it's hard to imagine. >> there's got the be a better solutions. there's got to be. >>> it is yahoo! your day time. talking about an issue. sit wrong to have a favorite child? what should you do if your kids think you do? reena ninan has a story of a mommy blogger having trouble to bond with her kids. >> do you guys have favorite kids? >> reporter: most parents try to stay neutral. >> honey, don't be ridiculous. parents love their children infin it inially. >> i would say axl. >> what do you think? >> reporter: 30-year-old mother of two lori hartman says her 3-year-old daughter is her favorite writing in her blog, i don't feel guilty for having a favorite child. despite the immense love i have for both of my children i couldn't help feeling like the bond with my daughter my first born was different. stronger. >> i had fears. my heart wouldn't have

giersch's lawyer told us daniel continues to protect the children from negativity and therefore will continue to not engage in any of these unfortunate and false media fabrications is all about protecting her children and others. she's established an organization with that goal, that no other children will have to go through what hers are. not only is this story heartbreaking, it's hard to believe. >> it's hard to imagine. >> there's got to be a better solution. there's got to be. >>> it is yahoo! your day time. everyone, this morning, we're tackling an issue a lot of parents are uncomfortable confronting. is it wrong to have a favorite child? what should you do if your kids think you do? abc's reena ninan has the story of one mommy blogger who has had trouble bonding with one of her kis and isn't afraid to talk about it. >> do you guys have favorite kids? >> reporter: when it comes to favoritism most parents try to remain neutral, like frankie on "the middle." >> honey, don't be ridiculous. parents love all their children infinitely. >> reporter: but for others, the decision is not always a hard one. >> i guess i would say axl. what? >> what do you think? >> re