Final answer:
A diet low in saturated fats and cholesterol and high in unsaturated fats, fruits, vegetables, lean meats, and whole grains has been shown to decrease cholesterol levels. Additionally, statins and other medications may also be necessary to manage cholesterol effectively.
Step-by-step explanation:
A diet that has been shown to decrease cholesterol levels in some patients is one that includes dietary modifications such as reduced intake of saturated fats and cholesterol, opting instead for unsaturated fats, and increased physical activity.
To lower total cholesterol and improve the LDL:HDL ratio, it is recommended to substitute unsaturated fat for saturated fat, reduce consumption of trans fatty acids, and limit the intake of animal products rich in cholesterol like meat, eggs, and dairy.
Consuming healthier fats, such as those found in peanut, cottonseed, corn, and soybean oils, and increasing the intake of fruits, vegetables, lean meats, and whole grains, can all contribute to lowering cholesterol levels. Additionally, the feedback mechanism in the liver adjusts cholesterol synthesis based on dietary intake, further influencing blood cholesterol levels. While dietary modifications can have a significant impact, many patients may also require medication, such as statins or other lipid-lowering agents, to manage their cholesterol and reduce cardiovascular risk.