Diet, exercise, stress, and genetics also influence your cholesterol levels. Simple carbohydrates (such as white bread, fizzy drinks, or biscuits) cause spikes in your blood sugar levels and can increase your triglycerides. Triglycerides are a type of fat in your blood that, like LDL, can increase the risk of cardiovascular diseases. In this way, carbohydrates indirectly affect your fat metabolism.
If you experience a lot of stress, your body produces the stress hormone cortisol, which can indirectly disrupt your fat metabolism. Prolonged sitting (for example, at work) also reduces the activity of enzymes that break down fats in your blood. Therefore, sitting for long periods can worsen your cholesterol levels, even if you otherwise eat healthily.