This patient support community is for questions related to juvenile diabetes including celiac disease, depression, diabetic complications, hyperglycemia / diabetic keto-acidosis, hypoglycemia, islet cell transplantation, nutritional issues, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with diabetes.
I'm not a physician, just a 10-year diabetic. I heard the same thing a couple of years back, and at that time it was something along the lines of "If you heat it up to (some very high temperature) and then consume (some very large amount) of that heated-up aspartame you have the risk." Whether or not that is the same story, who knows. Here's a site of consideration :)
http://www.aspartame.net/media/scilib/sclib011.html
It looks like you came across one of the "anti-Aspartame" sites. There are plenty of anti "this & that" sites, and there are just as many sites touting the benefits of "snake oil" (useless expensive -- and sometimes dangerous! products that only make their vendors a lot of money). It can be hard to figure out if we're getting reliable info or just a snake-oil sales pitch.
Some folks (phenylketonurics) cannot tolerate any aspartame at all. You would know if you have this condition. Other folks dislike the whole idea of artificially created sweeteners and others just don't like their taste. Some of us incorporate them into our regular diet and are grateful for expanded food choices it provides.
At your next doctor's visit, I recommend you chat with him/her about your usage and pay attention to whether you have any noticeable effects from foods/beverages with aspartame. The choice to use (or not) certain foods in our diets is a very personal one and there are passionate views on many approaches. Seems to me that we do well when we discuss these things with our endocrinologists and/or certified diabetes educator.
As you know, I'm neither ;-) but wanted to add my views here.
The effects of aspartame include and are not limited to:
(list from www.dorway.com)
Abdominal Pain
Anxiety attacks
arthritis
asthma
Asthmatic Reactions
Bloating, Edema (Fluid Retention)
Blood Sugar Control Problems (Hypoglycemia or Hyperglycemia)
Brain Cancer (Pre-approval studies in animals)
Breathing difficulties
burning eyes or throat
Burning Urination
Chest Pains
chronic cough
Chronic Fatigue
Confusion
Death
Depression
Diarrhea
Dizziness
Excessive Thirst or Hunger
fatigue
flushing of face
Hair Loss (Baldness) or Thinning of Hair
Headaches/Migraines dizziness
Hearing Loss
Heart palpitations
Hives (Urticaria)
Hypertension (High Blood Pressure)
Impotency and Sexual Problems
inability to concentrate
Infection Susceptibility
Insomnia
Irritability
Itching
Joint Pains
laryngitis
Marked Personality Changes
Memory loss
Menstrual Problems or Changes
Migraines and Severe Headaches (Trigger or Cause From Chronic Intake)
Muscle spasms
Nausea or Vomiting
Numbness or Tingling of Extremities
Other Allergic-Like Reactions
Panic Attacks
Phobias
poor memory
Rapid Heart Beat
Rashes
Seizures and Convulsions
Slurring of Speech
Swallowing Pain
Tachycardia
Tremors
Tinnitus
Vertigo
Vision Loss
Weight gain
Aspartame Disease Mimics Symptoms or Worsens the Following Diseases
Fibromyalgia
Arthritis
Multiple Sclerosis (MS)
Parkinson's Disease
Lupus
Multiple Chemical Sensitivities (MCS)
Diabetes and Diabetic Complications
Epilepsy
Alzheimer's Disease
Birth Defects
Chronic Fatigue Syndrome
Lymphoma
Lyme Disease
Attention