• Millions of healthy women should be given drugs to prevent them developing breast cancer, reports the Telegraph. It says a team of specialists writing in the Lancet Oncology journal believe up to one in 10 women could benefit from anti-cancer treatments such as tamoxifen even before they show signs of the disease.

• The NHS should offer checks for dementia when people reach 75, according to the BBC. The Alzheimer's Society says fewer than half of those with the condition get a diagnosis, so many miss out on the care and support they need, but the UK National Screening Committee, which advises the NHS, has said tests and treatments need to improve first.

• The government's decision to scrap its lead mental health agency without creating an equivalent body has been criticised by the organisation's outgoing director, reports Community Care. The £6m-a-year National Mental Health Development Unit, which has helped implement mental health policy since April 2009, closes on Thursday with no successor body.

On my radar ...

• The hundreds of thousands of marchers who turned Saturday into such a memorable and inspiring event. There were nurses and librarians, teachers and firefighters, posties and Buddhists, pensioners and toddlers, brass bands and bagpipes. I was in awe of the man on a zimmer frame I saw walking up Whitehall alongside the cheerful members of Manchester's Unison branch, and loved the two men in a cardboard tank - complete with a solar-powered sound system. My favourite banner of the day: "Eric Pickles ate my youth club". Yes, I saw banks and shops along Piccadilly that had been paintbombed or had their windows smashed, but I did not see this action taking place. My experience of the day was of people coming together to make their voices heard, a real big society in action. Dominic Campbell's blogpost, My experience of the #26March protests, is recommended reading.

• The excellent response to our call for cuts watch volunteers to help us track the impact of the cuts, we've already had more than 100 people offering their time to our project, which aims to get a real grassroots view on how the cuts are biting.

• The Big Society: A View from the Frontline, a new film commissioned by the Calouste Gulbenkian Foundation, which is being launched today in Westminster. It shows charity managers and volunteers talking about their experiences of the big society project. Gulbenkian Foundation director Andrew Barnett explains:

"We have heard a lot from policy makers and thinkers about the Big Society but very little from those who are working on the ground and the beneficiaries of their work. Five very diverse civil society organisations were asked: How do they connect to their communities? What do they think the Big Society means? What is their contribution to – and their big ask of – the Big Society?
"It is clear from our film that charities, voluntary and community organisations want to be part of the debate around the Big Society. Many organisations feel they are delivering the Big Society already – and have been doing so for years – and they are keen to have their voices heard. They all have considerable experience and expertise to offer and believe that with the right help from central and local government they could do more. They want politicians and public officials not just to pay lip service to involving communities and volunteers but to ensure that they are part of the policy discussion at the beginning."

• Gail Knight, campaigner extraordinaire on the issue of public loos, who has been named runner up in the Stationery Office's first OpenUp competition for ingenious use of open data. Knight wants to use councils' data to create the Great British Public Toilet Map.

• The Mayor's Fund for London, which has launched a new drive to help get disadvantaged young people into work. According to the mayor's office, almost one in ten (8.9%) Londoners are unemployed, while nearly a quarter (21.7%) of 18 to 24-year-olds in inner London are claiming Jobseekers Allowance. The Young London Working campaign aims to help young people move out of poverty and into jobs. As well as offering training, mentoring, work experience and counselling, it will work with employment agencies to connect young people seeking work with potential employers.

• Community Champions, a new film about individuals making a difference in their communities, which premieres on the Community Channel today.