Are taking laxatives a good way to lose weight?

Recently, I was asked if taking laxatives are a good way to lose weight, because the person who asked me said that their slim friends "swear" by them. So I figure this is a good time to talk about any kind of "purging" which could be taking laxatives, eating foods that don't agree with you, and bulimia. 

There are two issues with purging food:

1) Your body won't have a chance to absorb nutrients which can lead to malnourishment.
Your body needs to absorb nutrients for everything from hormone balance to giving you gorgeous skin and hair and nails, so purging food is counter productive for achieving that healthy glow. And in some cases, becoming malnourished and having hormone imbalance leads to weight gain rather than weight loss.
So let's say you're the type of person who wants to have cheesecake even though you know you're lactose intolerant. You tell yourself that you should eat everything in moderation, so you decide to eat a salad before having that cheese cake. Well, if your body doesn't react well to the cheesecake and you purge the food, then your body is not only getting rid of the dairy that it doesn't like, but also the good nutrients from the salad that it didn't have a chance to absorb.
2) Your muscle that pushes out poo becomes weak.
When people start relying on laxatives to push wastes out of their body, their body gets out of the habit of pushing wastes out on its own. So when you go off laxatives, it can be very painful/complicated to poo.
Same thing goes for eating foods that don't agree with your body. Some people have yogurt for breakfast every morning and then have a bowel movement thinking that the probiotics are helping them (and in many cases, it does).
But if you're lactose intolerant, your body might be having a bowel movement as a negative effect to having dairy rather than a positive effect of probiotics. So if you were to find out officially that dairy doesn't work for you and stop having yogurt, your body has to get back in the mode of relearning how to push out poo on it's own.
It's really important to find out what foods do not agree with you, and one way you can get clear answers is by taking a food intolerance test.
Not just because of purging, but because some foods that might be irritating you can lead to other things like redness in your skin, bloating, and poor mood.
Getting clarity on what works with your body, , is one step towards a balanced weight!