New Research: Latest Updates on Lecithin

Lecithin is a compound found in both the human body and various foods. Sunflower lecithin, in particular, is gaining significant attention in the dietary supplement and nutrition industries.

Today, we will explain why lecithin is important for health, its mechanisms in the body, and which groups of people might benefit most from lecithin supplementation, based on scientific research, to provide you with accurate and complete information.

What is Lecithin and Does the Body Need It?

Lecithin is a phospholipid fat found in all cells of the body, especially in cell membranes, liver, and nerve tissues. The key component of lecithin is phosphatidylcholine, which plays an important role in maintaining cell membrane integrity and fat transport.

The body can produce some lecithin on its own, but getting additional amounts from food or supplements may be beneficial. According to a study in the journal Nutrients in 2020, additional consumption of lecithin significantly boosts blood phosphatidylcholine levels.

Health Benefits of Lecithin from Various Research

1. Brain and Nervous System Function

Supporting research:

• A study in the Journal of Clinical Biochemistry and Nutrition in 2019 found that elderly people who received 1,200 mg of phosphatidylcholine daily for 12 weeks showed significantly improved memory and concentration test scores compared to the placebo group.

• Research from Frontiers in Aging Neuroscience in 2021 demonstrated that phosphatidylcholine supplementation may slow neuronal degeneration in Alzheimer's disease models.

2. Heart and Blood Vessel Health

Lecithin helps control cholesterol levels and fat metabolism.

Supporting research:

• A 2021 analysis in the Journal of the American College of Nutrition, which compiled results from 12 clinical studies, found that lecithin supplementation helps reduce total cholesterol and LDL-cholesterol while increasing HDL-cholesterol levels.

• A study in the journal Atherosclerosis in 2019 found that phosphatidylcholine helps reduce blood vessel wall inflammation and plaque buildup in arteries.

3. Women's Health and Breastfeeding

Lecithin offers specific benefits for breastfeeding mothers in preventing milk duct blockage.

Supporting research:

• A clinical study in Breastfeeding Medicine in 2022 followed 200 breastfeeding mothers and found that those receiving 4,800 mg of sunflower lecithin daily had a 58% reduction in milk duct blockage compared to the placebo group.

• A study in Maternal & Child Nutrition in 2021 found that lecithin improves milk viscosity and flow, which is beneficial for breastfeeding.

Groups Who May Benefit Most from Lecithin Supplementation

1. Elderly People

As we age, the body's production of phosphatidylcholine decreases, which may affect brain health and liver function. Lecithin supplementation may help slow neuronal degeneration and maintain liver function.

Supporting research: 

• A study in Aging Clinical and Experimental Research in 2022 found that elderly people who received 1,200 mg of phosphatidylcholine daily for 6 months showed significant improvement in brain function, especially in memory and information processing.

2. People at Risk for or with Fatty Liver Disease

Lecithin helps transport fat from the liver and reduces fat accumulation in the liver.

Supporting research: 

• A study in Hepatology in 2021 found that supplementing with 900 mg of phosphatidylcholine three times daily for 6 months helped reduce the severity of non-alcoholic fatty liver disease (NAFLD) by significantly lowering liver enzymes and reducing inflammation.

3. People with High Cholesterol Levels

Lecithin helps control blood fat levels and improves the ratio of good to bad cholesterol.

Supporting research: 

• Research in the Journal of Nutrition in 2019 showed that people receiving 2,400 mg of lecithin daily for 8 weeks had an average decrease in LDL-cholesterol of 8.7% and an average increase in HDL-cholesterol of 5.2%.

4. Breastfeeding Mothers

Lecithin helps prevent milk duct blockage and improves milk flow.

Supporting research: 

• In addition to the research mentioned above, a survey published in the Journal of Human Lactation in 2023 of 500 breastfeeding mothers found that 78% of mothers using lecithin reported reduced milk duct blockage problems and more convenient breastfeeding.

5. People Looking to Improve Brain Health and Memory

The choline in lecithin is an important precursor in creating neurotransmitters related to memory and learning.

Supporting research: 

• A study in Frontiers in Neuroscience in 2021 found that students who received 900 mg of phosphatidylcholine daily for 90 days had significantly improved learning abilities and memory compared to the placebo group, especially in high-stress situations.

Recent Research on Lecithin

Since lecithin is considered an important substance in the dietary supplement industry, there is ongoing research and development. Recent research by Onaolap and colleagues in 2024 also indicates that lecithin helps reduce LDL fat in the body and reduces the risk of coronary heart disease.

Conclusion

Lecithin is a nutrient with various health benefits, especially for brain health, liver, and the cardiovascular system. Scientific research has demonstrated the benefits of lecithin supplementation for diverse groups, including the elderly, those at risk for chronic diseases, and breastfeeding mothers.

Although sunflower lecithin is highly safe and has many benefits, supplementation should be under the guidance of health professionals, especially for those with underlying conditions or who are taking other medications.

References

• Johnson, M. et al. (2020). Dietary phosphatidylcholine supplementation increases plasma choline levels in healthy adults. Nutrients, 12(8), 2254.

• Tanaka, Y. et al. (2019). Effect of phosphatidylcholine supplementation on cognitive function in elderly Japanese men with subjective memory complaints. Journal of Clinical Biochemistry and Nutrition, 65(2), 140-144.

• Rivera, D. et al. (2021). Phosphatidylcholine supplementation attenuates neuronal death in an Alzheimer's disease model. Frontiers in Aging Neuroscience, 13, 653691.

• Chen, L. et al. (2021). Effect of lecithin supplementation on blood lipid profiles: A meta-analysis of randomized controlled trials. Journal of the American College of Nutrition, 40(5), 404-414.

• Rodriguez-Gómez, J.A. et al. (2019). Phosphatidylcholine supplementation reduces inflammatory markers and atherosclerotic plaque formation in ApoE-deficient mice. Atherosclerosis, 289, 85-93.

• O'Sullivan, E.J. et al. (2022). Sunflower lecithin for recurrent plugged ducts: A randomized controlled trial. Breastfeeding Medicine, 17(4), 301-309.

• Thompson, M.D. et al. (2021). The effect of lecithin supplementation on breast milk viscosity and incidence of plugged ducts: A randomized controlled trial. Maternal & Child Nutrition, 17(3), e13167.

• Martinez-Lapiscina, E.H. et al. (2022). Effects of phosphatidylcholine supplementation on cognitive performance in the elderly: Results from a 6-month randomized, double-blind, placebo-controlled trial. Aging Clinical and Experimental Research, 34(4), 913-922.

• Zhang, L. et al. (2021). Polyenylphosphatidylcholine supplementation improves non-alcoholic fatty liver disease: A 24-week randomized controlled trial. Hepatology, 73(5), 1891-1903.

• Brown, T.J. et al. (2019). Effect of dietary lecithin supplementation on plasma lipid concentrations in adults with hypercholesterolemia. Journal of Nutrition, 149(5), 834-841.

• Peterson, B.L. et al. (2023). Perceived effectiveness of lecithin supplementation for the prevention of plugged ducts during lactation: Results from an international survey. Journal of Human Lactation, 39(1), 149-157.

• Wilson, D.M. et al. (2021). Effects of phosphatidylcholine supplementation on learning and memory under stress conditions in healthy young adults. Frontiers in Neuroscience, 15, 669987.

• Onaolap et al. (2024). Lecithin and cardiovascular health: a comprehensive review. The Egyptian Heart Journal, 1-13.