The promotion of a small indigenous fish rich in vitamin A can cost effectively improve vitamin A intake, as described in this benefit-cost analysis. With fish already an important part of the Bangladeshi diet, the $23 million mola promotion program (MPP) is estimated to save 3,000 lives and 100,000 disability-adjusted life-years (DALYs) at a cost of $194 per DALY saved.
Fiedler, J. L., Lividini, K., Drummond, E., and Thilsted, S. H. Aquaculture (January 2016) Vol. 452 pp. 291-303.