Hi,
What you need to look at are the cholesterol ratios if you have a good ratio then elevated LDL is not such an issue. Some things you can do is take Plant Sterols, those can make a difference. I cannot tell whether you are male or female, if you are a chap avoid Soya at all costs, it may be good for general health but it will increase estrogen levels, which is you are a chap is bad it can produce a whole set of hormonal problems which are very difficult to pin point and do cause problems with sugar levels.
My advice would be don't panic, try to deal with the sugar levels first, if you can take up some exercising, research evidence shows that 30mins of resistance training and 30mins of aerobic training can act as wonderful stabilizers for HBA1C levels and as a bonus will drop your cholesterol as your body uses more fat to fuel you.
Hope that helps,
Frankie