i’m not sure what you mean by "suddenly". but it’s unfortunately common for cholesterol levels to rise as we age particularly if you have a family history of high cholesterol. in addition certain medications and medical conditions such as thyroid problems are associated with a rise in cholesterol. so make sure to check in with your doctor about rising cholesterol levels. if everything checks out fine then be sure to take a very close look at what you’re eating. cut back on saturated fat and cholesterol intake. losing weight if needed will also typically drop cholesterol levels. exercise also helps. if all else fails talk to your doctor about medication for lowering cholesterol.
why would my cholesterol level suddenly be elevated if i have not changed my diet in any way?