ON MOST mornings, Shyamla Kashyap sits by her bedroom window in Surat, a protein shake in one hand, a phone in the other. The ritual is small but precise: she scrolls through Reddit ,where strangers trade stories about transformation. For the past four months, Kashyap — 38, once an IT professional, then a banker, now the co-founder of a modest laundry delivery start-up — has been part of a growing congregation: Indians bound by a shared fascination with a new class of weight-loss drugs.