You are asking two distinct questions
1) Is high LDL bad? The person that provides the most cogent explanation of this topic IMO is Chris Masterjohn. His most recent interview with Chris Kresser (http://thehealthyskeptic.org/the-healthy-skeptic-podcast-episode-11) was outstanding. It's long but it is worth the 90 minutes of time invested.
I tend to be a cholesterol skeptic along the lines of people like Kurt Harris and Peter at Hyperlipid. Here are some links to check out -
From the Archevore link, the relevant quote is "I do not believe in any of the versions of the lipid hypothesis, ranging from Ancel Keys' original idea that cholesterol or dietary fat clogs the arteries, to the currently fashionable one that “small, dense” LDL particles are like microscopic rodents that are designed to burrow under the intima of your blood vessels and kill you".
There was a great article at Hyperlipid (http://high-fat-nutrition.blogspot.com/) from a few years ago but I am not able to find it. I will try and edit this post if I find it.
2) Regarding weight loss - to the extent there is a correlation between (sd) LDL and carbohydrate consumption and IF you have metabolic issues that require you to limit carb intake to lose / maintain weight, then you could somehow link the two. But causality....I don't think so!
Bottom line - it is absurd that your LDL of 109 is considered high by your doctor. When it hits 300, sell :-) Til then, eat whole foods, avoid toxins, get lots of sleep, exercise for the hormetic and hormonal benefits (not calorie expenditure), and enjoy life!