I call BS. I call propaganda. I won't even try to argue the content of the article. Imma directly attack the way this misinformation was distributed.
The entry for carnitine is pretty old. Probably as old as Wikipedia itself since we've known about carnitine long before Wiki went live. And my guess is Wiki needed all the hard knowledge it could get to go live for credibility purpose. But look here under the carnitine entry today:
Although carnitine is essential for cellular metabolism, a study published in 2013 indicates that it is implicated in heart disease.  The study found that gut bacteria use carnitine as energy, and a byproduct of that process is converted to trimethylamine N-oxide (TMAO) in the liver. The researchers discovered that TMAO helps cholesterol to get into artery walls, where plaque is formed, and it also impairs the body's ability to excrete excess cholesterol. They found that TMAO blood levels are a predictor of heart attacks. The carnitine itself is not the cause, but because gut bacteria use it as fuel and it eventually becomes TMAO, excess consumption of carnitine could cause heart disease. Red meat is the food that contains high levels of carnitine, but body-building and weight-loss supplements also contain considerable amounts of carnitine. These supplements commonly provide five to 10 times the amount of carnitine found in 100 grams of red meat.
And look here at the publication date for the article:
By GINA KOLATA
Published: April 7, 2013
I'm posting this on date 19:48 2013-04-07
Articles don't usually get cited on Wikipedia the same day they're published on news sites. That usually happens after some time, after the genuine contributors to Wiki go through the sources and consider their validity. This situation is not normal. This is clear indication of concerted efforts on several fronts at once. And here's what I found:
Here's the Wiki entry for TMAO: http://en.wikipedia.org/wiki/Trimethylamine_N-oxide
TMAO doesn't sound like such a bad thing after all. But look here:
Recent studies show that high levels of TMAO increase the risks of cardiovascular disease. The consumption of red meat appears to be linked with people having higher TMAO levels in their bodies. 
And under reference , we find this:
^ Kolata, Gina. Study Points to a New Culprit in Heart Disease. The New York Times. April 7, 2013. Accessed 2013-04-07.
Archive page: http://web.archive.org/web/20120913...ylamine_N-oxide
My conclusion is it's a concerted effort to distribute this misinformation as widely as possible, with as much credibility as possible by modifying at least 2 Wikipedia entries the same day of publication of the NYTimes/Gina Kolata article. But by whom? Three possible explanations.
1. Gina Kolata herself made the Wikipedia modifications
2. Gina Kolata is associated with the person(s) who made the Wikipedia modifications, by providing them with the URL to the NYTimes article
3. Somebody used Gina Kolata's good name and reputation without her knowledge to promote their own agenda
Any way I look at it, it makes Gina Kolata look bad. If she did not make the Wikipedia modifications herself, she must address this situation by notifying her readers of it. I sent her an email. I sent a copy of that email to the editor of the NYTimes. I'm going to send an email to Wikipedia as well to notify them of this situation. We'll see.
I wonder how many times this same situation was repeated in the past. It's no big deal to me. I know misinformation and propaganda when I see it.