This article makes some good points.
But despite acknowledging that "Wealth is closely associated with all aspects of well-being...More affluent individuals have fewer depressive symptoms, greater life satisfaction, better quality of life and lower levels of loneliness." they don't make the connection with older women living in poverty perhaps having an impact on their wellbeing.
The stat I heard the other day said that only 30% of women retire with an entitlement to the full state pension, versus 70% of men.