This is the first time in 40 years that junior doctors have decided to take industrial action and strike. Isn't that telling? It has been their last resort in their battle to maintain standards of care for both patients and staff within the NHS. Despite this, the Government has still gone ahead with its plan for a seven-day NHS by imposing its proposed contract against their will.

Over 60 per cent of the public support the junior doctors' strikes, so long as emergency care is still given (and it is). The Independent columnist Mary Dejevsky clearly doesn't fall into this group. On Thursday she argued that the Government should not compromise on its plans for a seven-day NHS. On one hand I can see where she's coming from – it's the Government's perogative to introduce reforms where they see a potential issue.

But at the same time, she totally misses the point – the seven-day promise is as yet undefined, uncosted and unmodelled. Even this week, a Department of Health representative couldn't explain what the cost of a seven-day NHS will be, let alone define what they want from the extra weekend services.

I sympathise with Dejevsky when she says that hospitals noticeably have less staff on weekends – they do. But it’s not junior doctors or even consutants that are lacking. All junior doctors are contracted to work weekends and less than 1 per cent of consultants opt out of weekend cover.

In pictures: Junior doctors protests in UK Show all 10 1 /10 In pictures: Junior doctors protests in UK In pictures: Junior doctors protests in UK 20,000 Junior Doctors marched through central London in protest at the new contract changes the government is trying to impose which they say will be unfair and unsafe In pictures: Junior doctors protests in UK Junior doctors protest in London In pictures: Junior doctors protests in UK 4 year old Cassius takes part in a demonstration in Westminster, in support of junior doctors over changes to NHS contracts, London In pictures: Junior doctors protests in UK Protest over proposed changes to junior doctors' contracts, Leeds In pictures: Junior doctors protests in UK Junior doctors and NHS staff protesting against the health service cuts and the proposed contract changes offered by the government outside Parliament In pictures: Junior doctors protests in UK Junior doctors and NHS staff protesting against the health service cuts and the proposed contract changes offered by the government outside Parliament In pictures: Junior doctors protests in UK Over 5000 junior doctors rallied in Waterloo place, before marching through Whitehall and onto Parliament Square, in opposition to Jeremy Hunt's new working conditions for doctors In pictures: Junior doctors protests in UK Demonstrators listen to speeches in Waterloo Place during the 'Let's Save the NHS' rally and protest march by junior doctors In pictures: Junior doctors protests in UK Junior doctors marched in London to highlight their plight In pictures: Junior doctors protests in UK A protester at a demonstration in support of junior doctors in London

On my most recent 13-hour weekend shift, my consultant arrived before me and was still there after I left. Not much of what Dejevsky calls a “Monday to Friday, 9 to 5” culture for doctors there then. On weekends we provide emergency care (not routine operations or outpatient clinics), so yes, there are “less skilled” staff as she describes them.

In support of what Dejevsky says, I too have struggled to obtain a diagnostic test for a patient or failed to discharge them home due to poor social care or support in the community at the weekend. But for a truly seven-day NHS we don't just need financial investment in this area. Recent leaked documents from Department of Health suggest that the NHS needs at least 4000 more doctors and 3000 more nurses.

Dejevsky argues that that junior doctors oppose wanting better services at the weekend due to a “resilient” overtime culture in the NHS. Far from it – what junior doctors like myself object to is the Government's dishonesty in saying that they want a seven-day service, while at the same time refusing to commit any extra money towards delivering it.

What's more, there aren’t any more doctors to deliver the Government's undefined extra weekend service. So you either make the same number of doctors work longer for less or you stretch the workforce even more thinly. Neither of these are safe for us or patients. As any doctor working on the frontline will tell you, trying to force seven-day service out of existing staffing levels will only lead to a more exhausted and demoralised workforce, which poses a huge threat to patient safety.

Dejevsky says the imposed contract is “too generous”, yet anyone will tell you that you cannot pay to get seven days for price of five – so it’s anything but generous. As for this “resilient” overtime culture - in medicine there is no such concept of overtime. Doctors are paid a small premium for working antisocial hours alongside the social hours we work. By the end of this week, my contracted hours will have been 80 hours. I will likely stay longer if I am in the middle of a clinical encounter as medicine is not a clock on/clock off profession.

Dejevsky also criticises the instigation of a judicial review by the BMA of the junior contract. But this is necessary to ensure the imposed contract has been through the necessary checks and balances to meet an Equality Impact Assessment. Dr Sally Davies of the Medical Women’s Federation (MWF) has concerns this imposed junior contract will widen the gender pay gap and potentially prevent women from progressing into senior academic, managerial or leadership roles.