Lecithin is a Greek word meaning egg yolk and the reason for naming it is the existing of a great amount of lecithin in the egg yolk and also the substance was first discovered in egg yolk. Lecithin is in group of phospholipids and often is known as phosphatidylcholine. Lecithin is a phospholipid that is found in all living things. It is a mixture of di glycerides of fatty acids of stearic, palmitic and oleic with ester choline of phosphoric acid. The body is capable of making lecithin, in addition, lecithin can be found in many meals.

Lecithin plays an important role in boosting memory and the fight against oblivion. Due to the increase of oblivion and the Alzheimer’s disease in old people and less utilization of this group of their brain, now in European countries, the elderly and middle-aged people are strongly recommended to consume lecithin as provided dietary supplements and available in world markets or using soybeans as the main source of lecithin. It should be noted that the use of the brain in any form can be a useful exercise for strengthening the memory. Just like organs of the body which of any age need to have activity and practice to have better health and performance. So for this reason, it is recommended especially for middle-aged and after retirement that in addition to supplying the brain food i.e. lecithin, do not forgot to read book and other brain activities such as solving crosswords and other entertainment etc. to always have an active mind and never lose concentration and memory and do not be suffering from amnesia. Lecithin in addition to its crucial role in preventing memory loss and helping to increase intelligence, has many other properties that a few of them are mentioned here briefly. Lecithin is a vital substance in the body that acts contrary cholesterol. In construction of lecithin and cholesterol, fatty acid and fat are used and both are owned by the family of fats. But it is interesting to note that these two (lecithin and cholesterol) work against each other, in other words, are opposed each other. Edible lecithin used in the chocolate industry and industry type used in the paint industry. Nowadays lecithin is a valuable additive in food processing and manufacturing industries and the number of its applications in the food industry is very high. Lecithin for emulsifying properties is used in industries such as cakes and cookies, sugary halva and chocolate confectionery, baked goods, salad dressings, and many processed foods.