Hair loss mainly involves the following aspects: the first is seborrheic hair loss, the second is pathological hair loss, the third is chemical hair loss, the fourth is physical hair loss, the fifth is nutritional hair loss, the sixth is obesity-related hair loss, and the seventh is hereditary hair loss. Among these seven types, the first, seborrheic hair loss, generally features thick oily secretions on the scalp, with hair being shiny, sparse, and fine. Another type is obesity-related hair loss, where a large amount of saturated fatty acids metabolized in the body produce waste that clogs hair follicles, leading to hair loss. These two types of hair loss may be somewhat related to blood lipids, but there isn’t a direct relationship; it could potentially exacerbate the condition. Under these circumstances, reducing the intake of greasy foods and opting for a light diet can lead to certain improvements. Additionally, high blood lipids and poor blood flow can also affect the scalp’s blood circulation, which might have an impact, but again, there isn't a direct relationship, meaning high blood lipids don’t necessarily cause hair loss.