А я вот что нашла про аспартам (правда, на английском) :
aspartame becomes a deadly poison at 86 degrees Fahrenheit (a scary thought when you stop to think that the human body has a core temperature of 98.6 degrees Fahrenheit).
Aspartame also releases a pleasant little thing called methanol (aka wood alcohol) during the digestive process (specifically when it comes in contact with the digestive enzyme chymotrypsin), which in turn, converts to formaldehyde, which in turn, converts to formic acid, an ant-sting poison. It's even a scarier thought when you realize that formic acid is used as an activator to help strip off epoxy and urethane coatings.
Up until 1981, aspartame wasn't fully approved. Why? Because the FDA knew it caused brain tumors and seizures in lab animals.
with continued use, aspartame has very slow, long-term, damaging effects on human beings. It may take one year, five years, ten years, even forty years, but the evidence is pretty clear -- use aspartame and damage your body. And we're talking about damage that is sometimes reversible, but sometimes not. The truth of the matter is aspartame was never and cannot be proven to be safe, nor can it be an effective diet aid since the formaldehyde it produces stores up in the body's fat cells, making matters worse.
The formaldehyde that aspartame produces is a deadly neurotoxin and a known carcinogen, causing retinal damage, interference with DNA replication, and birth defects. Why would anybody want this stuff in their bodies?! Simply because it has no calories?!!! Outside of the long list that the FDA has put together pointing out the symptoms and adverse reactions that people have to aspartame (including abdominal pain, brain cancer, chest pains, fatigue, hypertension, impotency, migraines, numbness, rashes, seizures, tremors, vision loss, weight gain and death), this man-made chemical also mimics symptoms or worsens diseases such as fibromyalgia, multiple sclerosis, Parkinson's disease, lupus, diabetes, Alzheimer's, ADD, lymphoma, and severe depression. This means, of course, that you could be treated for one of these diseases and not even know that it just might be an aggravated or adverse reaction to aspartame.
There are those of you, I'm sure, that would say, "So, what's the big deal?" Aspartame is basically just phenylalanine and aspartic acid, two harmless amino acids. Well, it wouldn't be such a big deal if the amino acids used were of IV pharmaceutical grade, if they were biologically fermented in their singular free-form, and if they were part of a broad-spectrum formula with the right transport vitamins, such as those found in the B-complex family. But it is a big deal if the phenylalanine and aspartic acid are of poor quality and unaccompanied by the other 20 amino acids that we so desperately need. Then they become neurotoxic.
It is true that L-Phenylalanine has been used successfully to both alter the satiety center of our brains (the center that tells us if we're hungry), and to effectively elevate moods. However, studies have shown that when used by itself, L-Phenylalanie also contributes to high blood-pressure. How ironic that most of the users of aspartame are the very same people who are concerned about their body fat or diabetics who are worried about their sugar intake. The bottom line is that the phenyalanine found in aspartame eventually breaks down into diketopiperazine (DKP), a known brain tumor agent.
And let's not forget about the Desert Storm troops that were supplied with large quantities of sodas and beverages sweetened with aspartame, which unfortunately, had been heated to over 86 degrees Fahrenheit while out in the Saudi Arabian sun. It's a pretty sad story, many of our soldiers returning home with numerous disorders similar to what has been seen in persons who have been chemically poisoned by formaldehyde.