Lima beans may possibly help men live longer if the research of an agency on male fruit flies proves right. According to their research, an oral dose of prunetin which is usually found in Lima beans, if given to the male fruit flies, it extends their lifespan, increases fitness levels and also helps to improve their glucose balance. This was not applicable to female flies. As females live longer when compared to their male counterparts, apparently prune tin feminises the male flies via its estrogenicity. Thus, they have concluded that it can ensure a longer life to Men.