People aren't really sure. Aspartame is an artificial sweetener,and it is a common stereotype that artificial sweeteners cause cancer. Aspartame, specifically, has had some scares with that belief. However, there is no known link between Aspartame and cancer.
Some have claimed that Aspartame causes headaches. This may be true, but many foods have been shown to give certain people headaches. These foods include cheese, red wine, and chocolate. Basically what I'm saying is, there are so many dietary triggers for headaches and migraines, that just because a food causes them doesn't mean they should be considered harmful.
Anyway, getting back on point, it isn't known whether or not aspartame is a harmful component to ingest. If you've had bad experiences with it, then you probably should try to avoid it, but if you haven't, there's no real reason not to consume it in rational amounts.
AnswerAspartame is definitely harmful. There are over 92 side effects and reactions associated with it - [too long to put here] (See website http://www.sweetpoison.com/aspartame-side-effects.html), and it has been definitely linked to cancers (see "Aspartame Associated with Increased Risk of Blood Cancers in Long-Term Human Study" @ http://articles.mercola.com/sites/articles/archive/2012/11/07/aspartame-causes-blood-cancer.aspx) . However, accepting these adverse reports would affect cause Profits to drop, and create huge litigation costs.
There are over 92 different health side effects associated with aspartame consumption. ...
Aspartame dissolves into solution and can therefore travel throughout the body and deposit within any tissue. ...
Aspartame Side EffectsThe components of aspartame can lead to a number of health problems, as you have read. Side effects can occur gradually, can be immediate, or can be acute reactions.
Adverse reactions and side effects of aspartame include:
blindness in one or both eyes
decreased vision and/or other eye problems such as: blurring, bright flashes, squiggly lines, tunnel vision, decreased night vision
pain in one or both eyes
trouble with contact lenses
tinnitus - ringing or buzzing sound
severe intolerance of noise
marked hearing impairment
headaches, migraines and (some severe)
dizziness, unsteadiness, both
confusion, memory loss, both
severe drowsiness and sleepiness
paresthesia or numbness of the limbs
severe slurring of speech
severe hyperactivity and restless legs
atypical facial pain
shortness of breath
recent high blood pressure
diarrhea, sometimes with blood in stools
pain when swallowing
Skin and Allergies:-
itching without a rash
lip and mouth reactions
aggravated respiratory allergies such as asthma
Endocrine and Metabolic:-
loss of control of diabetes
marked thinning or loss of hair
marked weight loss
gradual weight gain
aggravated low blood sugar (hypoglycemia)
frequency of voiding and burning during urination
excessive thirst, fluid retention, leg swelling, and bloating
increased susceptibility to infection
Additional Symptoms of Aspartame Toxicity include the most critical symptoms of all:-
irreversible brain damage
birth defects, including mental retardation
aspartame addiction and increased craving for sweets
hyperactivity in children
Aspartame may trigger, mimic, or cause the following illnesses:-
Chronic Fatigue Syndrome
Multiple Sclerosis (MS)
Mercury sensitivity from Amalgam fillings
Attention Deficit Disorder (ADD)
In short, don't touch it.