<human>: Can you summarize the given text in a few sentences?

First off, I love this subreddit and it has gotten me through some very dark days and nights.

The most I ever weighed was 410lbs.  I'm 6'4" and 28 years old.  I've always had a bad back but I've been seeing a chiropractor for the last 5-6 years, mainly as preventative care. Throwing my back out has happened a few times in the past and I was always told that losing weight would be good for my back what with the less weight I'd be carrying around.  

I had a major health scare in the beginning of October.  Checked into the ER with a 190/120 blood pressure late on Sunday and by Tuesday night I went and was admitted for losing feeling in the left side of my body.  Tests aside it all looked like blood pressure.  So I got prescribed beta blockers to help with blood pressure and anxiety, which also helped my hypoglycemia.  

In the months that have followed, I've officially been scared straight and have avoided the drive-thru.  My friends, family, and coworkers all can tell there's a major difference in how I look (my fiance' likes that I snore less).  I eat better, smaller servings and rarely go out at all for food.  I'm now down to 340 and moving fast from 405 the night of the first ER visit (65 pounds!!!!!)

BUT... I didn't do a lot of exercise or do much in the way of strengthening my core.  And with all that weight gone and my bad posture still happening, I threw out my back something fierce.  There was no support for my bones so I'm pinching so many nerves that I'm constantly icing and twitching.  New doc is beating me and getting things to move and open up again, but if I have one piece of advice to those losing weight and quickly - strengthen your core!  you do not want to be as miserable as I have been for the last week!
<bot>: lost 65 pounds in 5 months after a major health scare.  lost the weight but didn't do much to build muscle in my back so it collapsed something awful.  please strengthen your core when losing a ton of weight.