[Lazamataz]

The damage first manifested itself by a gradually increasing inability to walk normally, and constant shaking of his body. Doctors that treated him could find nothing other than his drug use to explain this.

There is a manifest connection between speed abuse and parkinsons.

• Research shows that damage to neurons containing Dopamine and Serotonin occurs to the nerve endings "terminals" which appear to have limited ability to re-grow, thus putting the user at risk for conditions such as Parkinsons & Alzheimers in later years.

I'm very sorry about your friend. But frankly, the only symptom that I would definitely connect with meth would be the Parkinsons-like effects. The rest sounds like massive, untreated depression.

[Fresh Wind]

The doctors say he doesn't have Parkinsons. Go argue with the them.

[eno_]

The rest sounds like massive, untreated depression.

Correct. There are plenty of people on track to the same outcome that were teatotal their whole lives. But all that means to the control freaks is that Krispey Kreme is the next tobacco.

[goldstategop]

It also sounds like a good way to get premature Alzheimers. Talk about punishment fitting the crime.