Women entering their 40s often notice unexpected health changes, and one of the most surprising can be a sudden increase in cholesterol levels. According to experienced cardiologist Dr Sanjay Bhojraj, these shifts are not always linked to diet or lifestyle, but may instead be driven by hormonal changes occurring during perimenopause.
As women transition through perimenopause and eventually menopause, the body undergoes significant internal adjustments. One of the most important changes is the gradual decline in oestrogen, a hormone that plays a protective role in maintaining heart health.
During this stage, many women who previously had stable cholesterol levels may begin to see an increase in LDL or “bad” cholesterol. This can happen even when there have been no noticeable changes in eating habits or physical activity. The shift often leads to confusion, as cholesterol is commonly associated with diet alone.
Dr Bhojraj explains that oestrogen has long helped protect blood vessels and regulate cardiovascular function. As its levels begin to drop, that natural protection weakens, increasing the risk of heart-related concerns. This means that rising cholesterol during the 40s may be more closely tied to biology than behaviour.
He highlights that for years, many patients were told their cholesterol changes were due to lifestyle choices, when in reality hormonal transitions were playing a major role. This misunderstanding has led to an underestimation of how menopause-related changes affect heart health.
The cardiologist uses a simple comparison to explain the process: as oestrogen levels decline, the body gradually loses a layer of protection, leaving the cardiovascular system more exposed to risk. This makes it essential for women to monitor heart health more closely during this phase of life.
Another important aspect discussed is hormone replacement therapy. Dr Bhojraj suggests that this therapy may offer benefits beyond managing visible symptoms such as hot flashes. It could also play a role in supporting cardiovascular health by restoring some of the lost hormonal balance.
However, any decision regarding treatment should always be made after consulting qualified medical professionals. Understanding the link between hormones and cholesterol can help women make more informed health decisions during midlife.