No, it won't stunt your growth unless you have improper form and do something to injure your bones. Hard exercise increases hormones, which can help contribute to growth. But like I said, you need to make sure you don't injure your spine, etc. If you are completely new to the work out field, take it nice and slow in the beginning (a few months perhaps) and get yourself and your body used to the exercises and focus on good form first. Then you can worry about the heavy lifting and showing off.

First off, since you are almost 18, the majority of your growth is probably already over. Second off, like Mikolas said, the only way weight lifting could stunt your growth is if you overstrain your spine or joints with heavy lifting or if you damage your growth plates from lifting with poor form.

this is simply a myth. so don't worry and begin you gym.

it is NOT a myth... but as long as you train properly, and don't go too heavy (work within the 8-12 rep range to begin with) you shouldn't have a problem. MMAFighter is spot on.

oh, but how come my friend started workin out at a young age lets say 13 years old yes he grew up but he's not that tall the fact that his brothers are atleast 5'9" - 5'10"

i think you just don't overdo it...

hey guys well im just here to know about some of this too.
well im only 15 and i workout and the thing is that im like 5"7 or 5"8 and i wanna keep growing to be like at least 5"10 to 6"0 ft and i just wanna know if you guys think that will happen?

i spoke to my doctor about it and she said that i still got another growth sperth to go
through

will it affect my growth if i continued to workout?

I pretty much would not recommend heavy weight lifting for kids 14 years and younger because they are still in risk of injuring their growth plates, which then could prevent growth. For your age, I'd begin to work out, but I would not max out on particularly stressing exercises such as squats with barbell and deadlifts. Towards the latter stages of your growth cycle, then I'd feel more comfortable to do as I please.

By the way, hard exercise can cause your body to produce more hormones, which in effect could cause you to grow a bit more.

The most important thing is for you to have proper form, a proper warm up, and ensure that you don't cause any injuries since you are still in a state of growth.

so then its okay for me to do it?