If your energy dips more sharply after meals, or your blood sugar feels harder to keep steady, there may be a a reason behind it. As you move through perimenopause and menopause, falling oestrogen can make your cells less responsive to insulin. This change in how your body handles blood sugar is in part due to the hormonal shifts of menopause, and understanding it can help you make eating choices that keep your energy steadier through the day.1
How falling oestrogen affects insulin sensitivity in menopause
Insulin is the hormone that helps move glucose (sugar) out of your bloodstream and into your cells, where it can be used for energy. Oestrogen helps influence how your body responds to insulin and handles glucose. After perimenopause and into post menopause oestrogen sits lower which means that some women may become less sensitive to insulin, particularly alongside changes in abdominal fat, muscle mass, sleep and activity. This can make blood sugar regulation less efficient over time and could increase your risk of type 2 diabetes.238
If you are already managing type 1 or type 2 diabetes, menopause can make your blood sugar harder to keep steady. Shifting hormones can make your glucose readings less predictable, so the patterns you were used to may change. It is worth speaking to your diabetes care team or GP before you change how you eat or manage things, so they can help you adjust your approach around these hormonal shifts.9
PMOS (formerly PCOS) and the menopausal transition
If you live with PCOS, (now renamed polyendocrine metabolic ovarian syndrome PMOS) insulin resistance or difficulty regulating blood glucose may already be part of your day-to-day. Falling oestrogen may place additional pressure on insulin sensitivity, alongside changes in age, body composition, abdominal fat, activity and weight. You may want to talk to your GP about checking your blood sugar more closely during this time, especially if type 2 diabetes runs in your family or you have noticed your body responding differently to food.4
Eating to support blood sugar and energy in menopause
What you eat can make a real difference to how steady your blood sugar feels across the day. The ideas below line up with general UK nutritional guidance, and they apply whether or not you have a diagnosed condition. They do not replace advice tailored to you from a GP or registered dietitian.
Vegetables, beans, and lentils bring fibre, which supports your gut health and may help your body respond to insulin more effectively.5
Including some protein at each meal can slow how quickly glucose enters your blood after eating. Eggs, fish, chicken, dairy, tofu, and pulses all count. Pairing protein with your carbohydrates at the same meal, rather than eating carbohydrates on their own, can help your energy hold up more steadily through the hours that follow.6
Cutting back on added sugar is worth doing gradually and consistently. Sugary drinks, heavily processed snacks, and foods made mostly from white flour can push your blood sugar up quickly, followed by a dip in energy. Reducing these, rather than trying to cut them out entirely, tends to be more sustainable over time.710
If you notice your energy dropping at a particular time, it can help to look at what you ate in the couple of hours before.11
If you are unsure about symptoms you are noticing, or your blood sugar readings have changed since perimenopause began, a chat with your GP is a good first step. They can look at what is going on and refer you to a registered dietitian or diabetes care team if that would help.