The culprit is something called TMAO. It’s a compound that’s formed when the lecithin in egg yolks combine with bacteria in your stomach.
TMAO is known to be associated with an increase in the risk for both stroke and heart attacks.
Egg yolks aren’t the only food containing lecithin, in fact your body manufactures it as well.
Researchers tested their theory by having volunteers eat hard-boiled eggs.
But in advance of that they gave some of those eating an antibiotic to clean their stomach.
Those without the medication had higher levels of TMAO than those who didn’t.
This comes less than two weeks after similar research showed a compound in red meat reacts with stomach bacteria the same way.
Lecithin is not the bad guy here. It’s the combination of the material and the bacteria that cause he issue.
WebMd describes lecithin as:
Lecithin is a fat that is essential in the cells of the body. It can be found in many foods, including soybeans and egg yolks. Lecithin is taken as a medicine and is also used in the manufacturing of medicines.
Lecithin is used for treating memory disorders such as dementia and Alzheimer’s disease. It is also used for treating gallbladder disease, liver disease, certain types of depression, high cholesterol, anxiety, and a skin disease called eczema.
Some people apply lecithin to the skin as a moisturizer.
You will often see lecithin as a food additive. It is used to keep certain ingredients from separating out.
You may also see lecithin as an ingredient in some eye medicines. It is used to help keep the medicine in contact with the eye’s cornea.