MDMA: 30 years to repair brain?

[KomodoMK]

I took the following from the EDIT site.

The thing to remember is that Serotonin release is strictly controlled within the body and is not limitless. Ecstasy changes the way that the chemical is released into the brain, giving huge doses whilst on the drug, with a considerably diminished dose thereafter. Long term users of ecstasy can experience depression in later life, due largely to a lack of serotonin to the brain. Habitual users may find it difficult to motivate themselves, and become bored and restless with their lives.
The effects that Ecstasy has on the brain are irreversible. Studies carried out on monkeys have shown that at least in their case, the brain will take an average of 30 years to repair the damage done from one dose of Ecstasy with regard to the release of serotonin.

It is undeniable that Ecstasy is very, very bad for you. Those with a history of heat, kidney & liver problems as well as strokes and high blood pressure are particularly at risk when taking Ecstasy.
Various studies carried out, indicate that the higher the dose & the more frequent the use, the worse the long term after-affects may be.

Is this information true? It seems a little extreme and I have read different information on this on erowid and elsewhere. I can't see it taking 30 years to repair the brain after a single average dose. If this was true surely it would cause much more damage in a much smaller time period, on those users who use every week or less.

I'll post the link to the article on EDIT upon permission from mods. The article contains further misinformation as well, including prices.