Will result in normal [[death]] [[skill]] loss, which is 0.25 from a few skills and 0.01 body strength. You will still lose full skill if you ''/suicide'' on a deed. To lose less skill on a deed, you must die via normal means, such as attacking the guards present.
You can only suicide if your [[body strength]] is at least 19.46, which gives accounts a limited number of suicides due to the 0.01 strength loss per death.
Keep in mind however, suiciding will still leave a corpse at the spot you died containing all the items you had in your inventory, except for [[non-drop]] items (e.g. deeds, writs, etc), which will stay in you inventory when you respawn.