Thousands of scientists and health experts have joined a global movement warning of grave concerns" about Covid-19 lockdown policies. Nearly 6,000 experts, including dozens from the UK, say the approach is having a devastating impact on physical and mental health as well as society. They are calling for protection to be focused on the vulnerable, while healthy people get on with their lives. The movement - known as the Great Barrington Declaration - mirrors some of the warnings in a letter signed by a group of GPs in the UK. Sixty-six GPs, including ... a number of medics who have held senior roles at the British Medical Association, have written to the health secretary, saying there is insufficient emphasis on "non-Covid harms" in the decision-making. They say keeping the lockdown policies in place until a vaccine is available would cause "irreparable damage, with the underprivileged disproportionately harmed". The health harms cited include ... worsening care for heart disease and cancer patients. And they point out the risk from coronavirus is 1,000 times greater for the old and infirm, with children more at risk from flu than Covid-19. The declaration recommends a number of measures to protect the vulnerable. But: young low-risk individuals should be allowed to work normally, schools and universities should be open for in-person teaching, [and] sports and cultural activities could resume and restaurants reopen.