What your menstrual cycle tells you about energy, mood, and PMS

Many women recognize it. One week you feel energetic, creative, and social. The next week, everything seems harder. You have less energy, get irritated more easily, and have a greater need for rest or suddenly an intense craving for sweets. For many women, this also manifests as symptoms like PMS. This is no coincidence. The female body operates on a monthly biological rhythm. While men are hormonally relatively stable, women's hormones like estrogen and progesterone fluctuate continuously throughout their cycle. These hormonal changes affect almost everything: your energy, mood, focus, libido, appetite, and even how your body handles stress. Yet, many women live in a world structured as if these differences don't exist. Performing the same every day, having the same energy, and functioning in the same way. But the body follows its own rhythm. And when you understand that rhythm, a lot suddenly falls into place.

The Menstrual Cycle by Phase

The first phase begins with menstruation. During these days, estrogen and progesterone are at their lowest point. The body is literally in a recovery process: the uterine lining is shed, and the system effectively resets. Many women feel this. There is often a greater need for rest, warmth, and fewer stimuli. This is biologically logical. The body demands recovery, not maximum performance.

After menstruation, the follicular phase begins. Estrogen slowly starts to rise, which has a noticeable effect on the brain and energy levels. Many women feel lighter, have more ideas, and find things come more easily.

Around the middle of the cycle, ovulation occurs. During this period, estrogen peaks. Many women then experience more self-confidence, social energy, and often a higher libido. Evolutionarily, this is logical, as this is biologically the most fertile period.

After ovulation, the luteal phase begins. Progesterone rises, and the body prepares for a possible pregnancy. If pregnancy does not occur, hormone levels drop again towards menstruation. For many women, this is the phase where they become more sensitive to stress, get irritated more easily, or have a greater need for rest and structure. The body is simply less tolerant of overload during this period.

PMS and PMDD

For a large proportion of women, this hormonal transition goes largely unnoticed. However, many women experience symptoms in the final phase of the cycle, usually five to seven days before menstruation. This is called PMS, or premenstrual syndrome. PMS can manifest as mood swings, fatigue, bloating, headaches, or strong sugar cravings. The body seems to react less stably to stress, and emotions can feel more intense. In a smaller group of women, the symptoms are much more severe. This is called PMDD, a more serious form where depressive feelings, anxiety, or extreme irritability can occur. The exact cause is not yet fully clear, but research shows that some women react more sensitively to hormonal changes in the cycle. So, it's not just that hormones fluctuate, but primarily how the body deals with these fluctuations.

What is often overlooked is that hormones never act in isolation. In other words, how strongly symptoms are experienced can vary per person and is influenced by multiple factors, including diet, stress, sleep, and general health.

The Role of Nutrition in PMS

Hormones don't just appear out of nowhere. The body produces them from building blocks derived from food, such as fats, amino acids, vitamins, and minerals. When the body has insufficient availability of these nutrients, it can react more sensitively to hormonal fluctuations during the cycle. This does not mean that PMS is caused solely by nutrition, but nutrition can play an important role in how the body deals with these hormonal changes. Micronutrients such as magnesium, zinc, and B vitamins, for example, play a role in energy production, the nervous system, and hormonal processes in the body. At the same time, we see that modern diets are often relatively poor in these micronutrients, while stress, poor sleep, and a busy life actually increase the need for them. Therefore, supporting the body with nutritious, unprocessed food can form an important foundation, especially in the phase before menstruation.

Practical Nutrition and Lifestyle Tips for PMS

In the luteal phase, roughly the week before menstruation, the body's needs change. Many women notice that their energy feels different and that their body has a greater need for stability and nourishment.

It can help to pay extra attention to nutritious meals and regularity in your daily routine during this phase.

Ensure stable blood sugar

Fluctuations in blood sugar can intensify cravings, fatigue, and mood swings. By eating meals with sufficient protein and fats, energy remains more stable.

The order in which you eat can also influence how quickly your blood sugar rises. When you eat protein, fats, and fiber first, and then carbohydrates, blood sugar often rises less quickly. This principle is also known as meal order. A meal can, for example, start with vegetables, proteins, or fats and only then contain carbohydrates. This helps to limit strong blood sugar spikes and can contribute to more stable energy and fewer cravings.

Additionally, it can help to choose slower-digesting carbohydrates from unprocessed foods, instead of fast sugars or highly processed products. These are absorbed gradually and therefore ensure a more stable energy release. Examples include sweet potato, pumpkin, fruit, raw honey, oatmeal, and quinoa. When these are combined with proteins and fats, energy remains even more stable.

Practical meals or snacks that fit this include:

• eggs with avocado
• full-fat yogurt or kefir with nuts
• a smoothie with collagen or whey
• fruit combined with nuts or nut butter

Light exercise after a meal can also help limit blood sugar fluctuations. A short walk of ten to twenty minutes after eating helps the body absorb glucose from the blood more efficiently. Many people notice that their energy remains more stable throughout the day as a result.

Many women also recognize that they crave sweets or chocolate more just before menstruation. This is not just willpower. In the luteal phase, the hormonal balance changes, and the body can become more sensitive to blood sugar fluctuations. Additionally, energy expenditure can slightly increase in this phase, meaning the calorie requirement can be approximately 100 to 300 kcal per day higher on average than around ovulation. So, the body sometimes simply asks for a little more energy. By choosing nutritious options such as dark chocolate, yogurt with cocoa and nuts, a smoothie with banana and protein, or fruit with nut butter, energy and blood sugar often remain more stable.

Eat magnesium-rich foods

Magnesium plays a role in muscle relaxation, the nervous system, and stress regulation. Many women seem to have a greater need for this mineral in the luteal phase.

Magnesium-rich foods include raw cocoa, dark chocolate, pumpkin seeds, almonds, cashews, spinach, and other leafy greens.

Ensure sufficient B vitamins

B vitamins are involved in energy production and hormonal processes. Foods rich in these include grass-fed red meat, eggs, liver, sardines, and other fatty fish. Sardines, for example, are particularly interesting because, in addition to B vitamins, they also contain omega-3 fatty acids, calcium, and other minerals.

Healthy fats support hormone balance

Hormones are partly built from fats. Therefore, it is important that the diet contains sufficient healthy fats. Good sources include: avocado, olive oil, grass-fed butter, fatty fish, nuts, and seeds.

Bone broth as a nutritious base

Bone broth is a traditional food rich in minerals, collagen, and amino acids such as glycine. These substances support, among other things, the nervous system, connective tissue, and the intestinal wall. A warm cup of bone broth in the morning is easily digestible, hydrates the body after the night, and at the same time provides nutrients without immediately causing a large blood sugar spike.

Exercise according to the cycle

The body does not have the same training capacity every week. Many women notice that intensive workouts feel better in the first half of the cycle, when estrogen is rising and energy is often higher. In the luteal phase, the body may have a greater need for calmer exercise. Walking, light strength training, mobility exercises, or yoga often better match how the body feels. By slightly adjusting training to the cycle, exercise often feels more natural and less taxing.

Sleep and biorhythm

The female body responds strongly to sleep and recovery. Sleep deprivation can increase stress hormones and make the body more sensitive to hormonal fluctuations. Many women notice that a fixed daily and nightly rhythm helps. Sufficient daylight during the day, less bright screen light in the evening, and a regular sleep pattern can support the biorhythm. Especially in the week before menstruation, extra rest can sometimes make all the difference.

Listening to your body's rhythm

The menstrual cycle is not a problem to be solved. It is a biological rhythm that has an enormous influence on how a woman feels and functions. When you understand that rhythm, you can work with it better. This sometimes means taking it a bit easier, sometimes pushing harder, nourishing the body when it asks for it, and allowing space for recovery. Because ultimately, the cycle is trying to do only one thing. Tell you something about your body. Your body is not working against you. It is trying to communicate with you. The only question is whether you learn to listen.