You must have seen food products that are sold with a sugar free label in the market. In these products, artificial sweeteners such as aspartame are used instead of sugar. Today, aspartame is found in more than 6 thousand food products, including All kinds of drinks, desserts, yogurt, chewing gum and some vitamins that are sold as low-calorie or diet are used and have about 200 million consumers in the world.

Aspartame was discovered in 1965 and since it is 200 times sweeter than sugar in normal dnsity and has few calories, it was considered as a sugar substitute for diabetics. But the use of this sweetener has been discussed because of the certain side effects that it has for health."

Recent research by scientists shows that aspartame breaks down into methanol in the body and methanol turns into formaldehyde. According to this research, taking small amounts of aspartame leads to the accumulation of a large amount of formaldehyde in the liver, kidney, brain and some tissues, which in the long run causes injurs the nervous system and immune system and may also lead to genetic problems. Considering the possible dangers of aspartame for health, in October 2005 members of the House of Commons of England asked the government to ban the use of aspartame in this country, but It has not yet been accepted by governments.