The authors cite one possibility for this slight increase in that those losing weight with lorcaserin were exposed to a somewhat greater dose per unit of body weight.
Part of the reason is that the chain is selling more unit-dose laundry detergent, like Tide Pods, which have a profit margin up to 5% lower than liquid laundry for retailers.
Ms. Black said profit margins on unit-dose detergents are constrained because the wholesale price is already high, so the retailer is wary of putting too much of a markup on it.