This is what we are taught in schools here, this is a Christian point of view.

http://en.wikipedia.org/wiki/Seven_deadly_sins
The Seven Deadly Sins, also known as the Capital Vices or Cardinal Sins, is a classification of objectionable vices that has been used since early Christian times to educate and instruct followers concerning fallen humanity's tendency to sin. The currently recognized version of the list is usually given as wrath, greed, sloth, pride, lust, envy, and gluttony.

Yes, they are deadly sins

"What does Islam say"

Allah said,

If you avoid the great sins which you are forbidden to do, We shall remit from you your (small) sins, meaning, if you avoid the major evil deeds that you were prohibited We will forgive you the minor evil deeds and will admit you into Paradise.

This is why Allah said,

and admit you to a Noble Entrance (i.e. Paradise). There are several Hadiths on the subject of this honorable Ayah. Imam Ahmad recorded that Salman Al-Farisi said, "The Prophet said to me, `Do you know what the day of Al-Jumu`ah is' I said, `It is the day during which Allah brought together the creation of your father (Adam).'

He said,

I know what the day of Jumu`ah is. Anyone who takes a bath and cleans himself as much as he can and then proceeds for the Friday prayer and remains quiet until the Imam finishes the prayer, all his sins in between the present and the next Friday will be forgiven, as long as major sins were avoided.'' Al-Bukhari recorded similar wording from Salman Al-Farisi.


What are the Seven Destructive Sins In the Two Sahihs, it is recorded that Abu Hurayrah said that the Messenger of Allah said,

Avoid the seven great destructive sins. The people inquired, 'O Allah's Messenger! What are they' He said, To join others in worship along with Allah, to kill the life which Allah has forbidden except for a just cause, magic, to consume Riba, to consume an orphan's wealth, to turn away from the enemy and flee from the battlefield when the battle begins, and to accuse chaste women, who never even think of anything that would tarnish their chastity and are good believers.

Another Hadith that mentions False Witness, Imam Ahmad recorded that Anas bin Malik said, "The Messenger of Allah mentioned the major sins, or was asked about the major sins. He said, Associating others with Allah in worship, killing the life, and being undutiful to the parents. He then said, Should I tell you about the biggest of the major sins The false statement - or the false testimony.'' Shu`bah - one of the narrators of the Hadith - said, "Most likely, in my opinion, he said, `False testimony.''' The Two Sahihs recorded this Hadith from Shu`bah from Anas. Another Hadith In the Two Sahihs, it is recorded that `Abdur-Rahman bin Abi Bakrah said that his father said, "The Prophet said, Should I inform you about the greatest of the great sins We said, `Yes, O Allah's Messenger !' He said, To join others in worship with Allah and to be undutiful to one's parents. He was reclining, then he sat up and said; And I warn you against false testimony and false speech. and he continued repeating it until we wished that he would stop.'' Another Hadith that mentions killing the Offspring In the Two Sahihs, it is recorded that `Abdullah bin Mas`ud said, "I asked, `O Allah's Messenger! What is the greatest sin' ﴿(in one narration) the biggest sin﴾' He said,
To make a rival for Allah while He Alone created you. I said, `Then' He said,
To kill your offspring for fear that he might share your food with you. I said, `Then' He said, To commit adultery with your neighbor's wife. He then recited, And those who invoke not any other god along with Allah, until,
Except those who repent.'' Another Hadith from `Abdullah bin `Amr Imam Ahmad recorded that `Abdullah bin `Amr said that the Prophet said, The greatest sins are: To join others in worship with Allah, to be undutiful to one's parents - or to take a life Shu`bah was uncertain of which one - and the false oath. Recorded by Al-Bukhari, At-Tirmidhi, and An-Nasai. Another Hadith by `Abdullah bin `Amr about Causing one's Parents to be Cursed `Abdullah bin `Amr said that the Messenger of Allah said, Among the worst of the major sins is for a man to curse his own parents. They said, "How can one curse his own parents'' He said, One curses another man's father, and that man curses his father in retaliation, or he curses someone's mother and that man curses his mother. This is the wording of Muslim. At-Tirmidhi said, "Sahih.'' It is recorded in the Sahih that the Messenger of Allah said, Cursing a Muslim is a sin and fighting him is Kufr.