Frances Haugen is the former Facebook employee turned whistleblower who extracted more than 22,000 pages of documents from the company revealing its inner workings. She believes they show the company prioritising profit over the safety of its users. Frances has since campaigned for greater transparency and accountability for social media firms, giving evidence to the US Senate as well as MPs here in the UK. And she's written a book, The Power of One, about her experience. But what has prompted one woman to take on one of the biggest companies in tech? And what has been the personal cost?

All this week on Woman’s Hour we are discussing the topic of loneliness as women and young people are statistically more likely to experience it. Today Nuala speaks to the psychiatrist Dr Farhana Mann from UCL about the impact of loneliness on our health.

A new community has formed on TikTok where content creators share their top reading recommendations and bring plots to life. BookTokkers are mainly female, as are their followers. With the social media giant now launching its own book awards, just how influential is the BookTok community to both followers and the publishing industry? Nuala is joined by Holly McLoughlin, who posts as “the caffeinated reader” and Assistant Literary Editor for The Times Susie Goldsbrough.

New research has found that almost half of black mothers living in London do not feel sufficiently educated on the impact of air pollution during pregnancy, despite 89% of respondents feeling concerned about air pollution in their local area. Nuala speaks to Dr Karen Joash is a consultant obstetrician and gynaecologist at Imperial College NHS Trust and expert adviser to Global Black Maternal Health, a platform that aims to connect and empower black maternal health movements across the world.

Lucy Bronze MBE is the most capped Lioness playing in the Women’s Football World Cup this year. Her mum, Diane, recorded a special message for Woman's Hour wishing Lucy and the team good luck ahead of England’s last group stage game against China today.