talk to them about it. see if you can sort something out, and tell them to stop covering up the truth. get them some help, and be supportive of it.
This is not possible and she is lying to you. Water in the lungs can lead to the person choking and will finally die if not treated.
nerolinguistics is the study of if someone is lying
the causes of smoking is someone smoking. the effects are what happens after.
Perjury is to lying as homicide is to killing someone.
Chronic lying is a sign of sociopathy.
If you are lying about seeing someone else when you shouldn't be the it's cheating. If you are lying so you don't hurt someone's feelings or you're lying to protect yourself from something you did wrong it is not cheating.
Why would you want to make someone sick? The only way for someone to get sick from smoking marijuana is for them to share a smoking devise with someone who is sick. Even then, it might not work.
The chemical released during lying is catecholamines
No
protecting someone
You can detect if someone is lying is if they do not look into your eyes when they are talking to you about stuff. However if thelier is good at acting then all you could do is catch them in what ever they are lying about.
Usually you can tell if someone is lying by the look on his/her face, they either look too serious or they are slightly smirking.