VANCOUVER - Legalizing doctor-assisted suicide would demean the value of life and could lead vulnerable people to take drastic steps in "moments of weakness," the federal government argues in its appeal of a court decision that struck down the ban on the practice.

Ottawa is defending the law that prohibits assisted suicide as it appeals a decision from a British Columbia court, which concluded it is unconstitutional to prevent the sick and dying from asking a doctor to help them end their lives.

The government argues in court documents that allowing any form of assisted suicide creates the possibility that people with disabilities, the elderly and the terminally ill could be coerced to end their lives or do so in moments of depression and despair, even if better days may be ahead.

"It (the current law's purpose) is to protect the vulnerable, who might be induced in moments of weakness to commit suicide," the government says in a 54-page legal argument filed with the B.C. Court of Appeal.

"And it is a reflection of the state's policy that the inherent value of all human life should not be depreciated by allowing one person to take another's life. ... It also discourages everyone, even the terminally ill, from choosing death over life."

The case was launched by several plaintiffs in B.C., including Gloria Taylor, an ALS patient who won an immediate exemption from the law. Taylor died earlier this month without resorting to assisted suicide.

The debate is likely destined for the Supreme Court of Canada, which last examined this country's assisted-suicide ban in 1993, when it upheld the law in a case involving Sue Rodriguez. Rodriguez died with the help of a doctor the following year.

The federal government argues the top court's ruling in the Rodriguez case was final and says the B.C. Supreme Court had no right to attempt to overrule that decision.

In the B.C. case, the judge concluded the law must allow physician-assisted suicide in cases involving patients who are diagnosed with a serious illness or disability and who are experiencing "intolerable" physical or psychological suffering with no chance of improvement.

The decision said patients in such scenarios must personally request physician-assisted death, must be free from coercion and cannot be clinically depressed.

The federal government argues the decision ignored evidence, presented at trial, that indicated safeguards in jurisdictions that allow assisted suicide are often not followed, including a number of cases in which patients were killed without their request. Some studies have concluded there is simply not enough evidence to conclude whether safeguards have worked.

The government says it can be virtually impossible to determine whether a patient is making a rational decision and isn't suffering from depression or other cognitive problems.

Nor can physicians and patients be sure the patient wouldn't change his or her mind if given more time to consider their decision, the government says.

Given that uncertainty, the government argues it is reasonable to assume legalizing assisted suicide would be harmful, and because of that, the courts should leave it to Parliament to decide such a sensitive and emotionally fraught issue.

In the two decades since the Rodriguez case, Parliament has examined the issue several times. In each instance, MPs opted to keep the status quo — most recently in April 2010, when a private member's bill to legalize assisted suicide was defeated 228-59.

"On each of those occasions, Parliament concluded that the risks inherent in physician-assisted suicide and euthanasia are too great," the federal government says in its legal argument.

"Parliament does what it effectively can, within its constitutional authority, to prevent and discourage all suicides."

Despite the B.C. decision, the law against assisted suicide remains in effect. The B.C. court's judgment was suspended while the case is before the Appeal Court.

Taylor was given an immediate constitutional exemption from the law, briefly making her the only person in Canada who could have legally sought doctor-assisted suicide.

The federal government asked the Appeal Court to overturn that exemption, but the court refused in a decision released in August.

Taylor died suddenly earlier this month due to a severe infection resulting from a perforated colon.

The B.C. case has helped fuel debate about assisted suicide across Canada.

In March of this year, a committee of Quebec's national assembly released a report examining end-of-life issues that recommended asking Crown prosecutors not to charge doctors who helped terminally ill patients to die.

Three months later, the Canadian Medical Association Journal published an editorial calling for a broad national dialogue to debate what the it described as "therapeutic homicide." The editorial argued the fate of the assisted-suicide law should be decided through the democratic process, not the courts.

Also on HuffPost:

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  • Euthanasia In Canada

    Here's a look at the state of Euthanasia laws in Canada and their history.

  • Suicide Not A Crime

    Suicide hasn't been a crime in Canada since 1972. (Shutterstock)

  • Doctor-Assisted Suicide Illegal

    Doctor-assisted suicide is illegal, although the ruling of the B.C. Supreme Court will force Parliament to alter the law within one year.<br><br> The <a href="http://laws-lois.justice.gc.ca/eng/acts/C-46/page-113.html#h-79" target="_hplink">Criminal Code of Canada states in section 241</a> that:<br><br> "Every one who (a) counsels a person to commit suicide, or (b) aids or abets a person to commit suicide, whether suicide ensues or not, is guilty of an indictable offence and liable to imprisonment for a term not exceeding fourteen years." (Alamy)

  • Passive Euthanasia

    Passive euthanasia involves letting a patient die instead of prolonging life with medical measures. Passive euthanasia is legal in Canada.<br><br> The decision is left in the hands of family or a designated proxy. Written wishes, including those found in living wills, do not have to be followed by family or a proxy. (Alamy)

  • Sue Rodriguez

    <a href="http://en.wikipedia.org/wiki/Rodriguez_v._British_Columbia_(Attorney_General)" target="_hplink">Sue Rodriguez</a>, who suffered from amyotrophic lateral sclerosis (also known as Lou Gehrig's disease), launched a case asking the Supreme Court of Canada to allow her to end her own life on the grounds that the current law discriminated against her disability.<br><br> Because suicide is legal in Canada and Rodriguez was unable to end her life because of a lack of mobility, she argued it was discriminatory to prevent her from ending her own life with the aid of another.<br><br> The court refused her request in 1993, but one year later she ended her life anyway with the help of an unnamed doctor. (CP)

  • Robert Latimer

    <a href="http://en.wikipedia.org/wiki/Robert_Latimer" target="_hplink">Robert Latimer was convicted of second-degree murder in the 1993 death of his severely disabled daughter Tracy</a>. A lack of oxygen during Tracy's birth led to cerebral palsy and serious mental and physical disabilities, including seizures and the inability to walk or talk. Her father ended Tracy's life by placing her in his truck and connecting a hose to the vehicle's exhaust.<br><br>The case led to a heated debate over euthanasia in Canada and two Supreme Court challenges. <br><br>Latimer was granted day parole in 2008 and full parole in 2010. (CP)

  • Bills To Legalize

    Former Bloc Québécois MP Francine Lalonde tried repeatedly to get legislation legalizing euthanasia in Canada passed. Bill C-407 and Bill C-384 were both aimed at making assisted suicide legal. C-384 was defeated in the House 228 to 59, with many Bloc MPs and a handful of members from all other parties voting for the legislation.<br><br> Tetraplegic Tory MP Steven Fletcher, pictured, made the following statement after C-384 was defeated: <br><br> "I would like to be recorded as abstaining on this bill. The reason is I believe end of life issues need to be debated more in our country. I believe that life should be the first choice but not the only choice and that we have to ensure that resources and supports are provided to Canadians so that choice is free. I believe, when all is said and done, the individual is ultimately responsible. I want to make this decision for myself, and if I cannot, I want my family to make the decision. I believe most Canadians, or many Canadians, feel the same. As William Henley said in his poem Invictus, "I am the master of my fate: I am the captain of my soul."<br><br>(CP)