This is more of a curiosity post than anything.
I suspect I have higher than typical fat in my milk for a few reasons (here's a link to standard breast milk fat content research: http://kellymom.com/nutrition/milk/change-milkfat/)
1. My son, who is 2.5, chooses a high proportion of his diet to be my milk and is growing very well on it despite limited intake of other foods. He nurses about 8-10x/day still, and will reliably eat one meal a day (mostly meat and fruit).
2. I have milk grease stains on my night tank tops that won't come out! (Good thing I bought cheapo cotton shirts for sleep!)
3. I've never pumped except for one occasion about a month ago where I hand expressed a few ounces of milk to alleviate fullness when DS had stomach flu and had a depressed appetite. When I refrigerated my milk and the cream separated, the milk was at least half fat by volume! Yowza!
What's your experience?
I wish I had some instruments to measure the fat content of my milk in several samples to get an estimate. I joke that I make 18% cream!