Here's an interesting comparison on how diets impact one's blood concentration of high- and low-density lipoproteins (HDL; LDL). In the first column, we're shown how cis fatty acids have the least impact on increasing LDL. These fats constitute the healthy fats found in vegetables, nuts, and fish. On the other hand, trans fats and saturated fats have the least desirable effect. Foods that typically contain these fats are pastries and meat, respectively.

For more information on LDL and HDL, follow the links. Below is a video explaining how the consumption of eggs - albeit high in cholesterol - may actually lower blood cholesterol levels.

...