Crossfit Cork 5/1/13 Eggs are good for you
Posted by Kevin 4 years ago | Under | Comments none
for the chemists among us
The piece below is the end of Peter Attia’s first post on Cholesterol found here, the reason that I’m posting it was to so with a conversation about eggs and cholesterol. I met this man and attended his talk at last years Ancestral Health Symposium at Harvard University. He really has taken some great steps in putting forth good scientific data on Cholesterol and I recommend that you take time to read the five parts. Eggs have a phospoholipid or lecithin known as phophatidycholine that prevents absorption of cholesterol, and while the study was done on rats the research is aimed at humans. A quote form this page here “This may be a reason why so many studies found no association between egg intake and blood cholesterol,” he said. The phospholipid, or lecithin, found in egg markedly inhibits the cholesterol absorption. The inhibition is not 100 percent, he said. Some cholesterol is absorbed but the amount is significantly reduced in the presence of this phospholipid.
It is important to remember that your doctor is not a scientist, strange as that may seem he or she is a medical practitioner so it can be hard to get the right answer if they havent opened a journal in a few years. Add to that the complexity of having to get a cholesterol number for a medical or for an insurance premium, and trying to explain that the number is about as useful as a chocolate teapot is nigh on impossible so if that is you then you have my sympathies.
To summarize this somewhat complex issue
- Cholesterol is “just” another fancy organic molecule in our body, but with an interesting distinction: we eat it, we make it, we store it, and we excrete it – all in different amounts.
- The pool of cholesterol in our body is essential for life. No cholesterol = no life.
- Cholesterol exists in 2 forms – UC and CE – and the form determines if we can absorb it or not, or store it or not (among other things).
- Most of the cholesterol we eat is not absorbed and is excreted by our gut (i.e., leaves our body in stool). The reason is it not only has to be de-esterified, but it competes for absorption with the vastly larger amounts of UC supplied by the biliary route.
- Re-absorption of the cholesterol we synthesize in our body is the dominant source of the cholesterol in our body. That is, most of the cholesterol in our body was made by our body.
- The process of regulating cholesterol is very complex and multifaceted with multiple layers of control. I’ve only touched on the absorption side, but the synthesis side is also complex and highly regulated. You will discover that synthesis and absorption are very interrelated.
- Eating cholesterol has very little impact on the cholesterol levels in your body. This is a fact, not my opinion. Anyone who tells you different is, at best, ignorant of this topic. At worst, they are a deliberate charlatan. Years ago the Canadian Guidelines removed the limitation of dietary cholesterol. The rest of the world, especially the United States, needs to catch up.
(To Part II »)
Back Squat 3 x 5
Wall balls 20
Knee to Elbows 10