Lets Look At the History, 10 years before Tamilnadu Govt Imported this Masoor Dhal From North India Coz of Cheap Rate Compare To Yellow Lentil Dhal (Thuvaram Paruppu). And it was Used in School Children's Lunch Scheme ( Sathu Unavu Thittam or Mathiya Unavu Thittam). At That time most of the children's caused serious health issues like Nervous Problems and that was proved by further investigations conducted by TN govt. So, TamilNadu Govt Passed Government Order(GO) for Banned This Masoor Dhal in TamilNadu.
After 10 years Again TamilNadu Govt Importing This Dhal in Civil Supplies ( Ration System ). Coz, of Cheap Rate of the Same Reason. up to 2 Kg Dhal is Supplying Through Ration Cards.
However, There are Lot of Confusions Going on this issue. We Cant Belive this Govt Too. So, Better to Avoid This Dhal for At-least Children's, Aged Peoples in our Homes.