Premenstrual symptoms affect a large share of people who menstruate, and they remain one of the most casually dismissed experiences in health. "It is just PMS" is a sentence that has delayed a lot of useful help.
What is happening
After ovulation, progesterone rises and then, if pregnancy does not occur, both progesterone and oestrogen fall in the final days before bleeding. Symptoms track that fall. The current understanding is not that hormone levels are abnormal, but that some people are more sensitive to the normal swing.
Typical symptoms, by type
| Type | Common examples |
|---|---|
| Physical | Bloating, breast tenderness, headaches, cramps, joint aches, fatigue |
| Mood | Irritability, low mood, anxiety, tearfulness, reduced tolerance for noise |
| Behavioural | Appetite changes and cravings, poorer sleep, less patience for planning |
They usually appear in the week or so before bleeding and fade within a few days of the period starting. That timing is the defining feature — symptoms present all month are something else and deserve a different conversation with a doctor.
What has reasonable evidence
- Regular aerobic exercise. Consistently associated with reduced symptom severity, including mood symptoms. Gentle counts.
- Sleep protection. Luteal-phase sleep is often lighter; short sleep amplifies irritability and pain sensitivity, so this is a compounding factor worth defending.
- Pain management. Over-the-counter anti-inflammatory painkillers are effective for cramps and headaches for many people — used as directed and discussed with a pharmacist or doctor if you take other medication.
- Reducing alcohol. It worsens sleep and mood exactly when both are already fragile.
- Tracking. Two or three logged cycles turn "random bad days" into a predictable pattern you can plan around, which itself reduces distress.
Some supplements — calcium and vitamin B6 among them — appear in the literature with mixed and modest results. If you want to try one, discuss the dose with a pharmacist or doctor rather than stacking products.
Kiva's note
Appetite rising before your period is physiology, not weakness. Planning for it with real meals works better than resisting it and then bingeing.
When to see a doctor
Speak to a healthcare professional if mood symptoms are severe enough to disrupt work or relationships, if you experience hopelessness or thoughts of self-harm, if pain stops you functioning, if symptoms last all month, or if the pattern changes suddenly. PMDD and severe PMS are recognised conditions with effective treatments — they are not something to endure quietly.
Frequently asked questions
When do PMS symptoms usually start?
Typically in the luteal phase, in the days between ovulation and the start of bleeding, and they usually ease within a few days of the period beginning.
What helps PMS symptoms?
Regular movement, protecting sleep, limiting alcohol, and managing pain with over-the-counter analgesics where appropriate all have reasonable support. Some people are helped by specific treatments prescribed by a doctor.
What is the difference between PMS and PMDD?
PMDD is a severe form in which mood symptoms — irritability, low mood, anxiety, hopelessness — are intense enough to disrupt work or relationships. It is a recognised condition with effective treatments and should be assessed by a doctor.
Keep reading
The four phases of your cycle, explained simply
What actually changes across follicular, ovulation, luteal and menstruation — and how to plan food, training and rest around it.
How much sleep do you actually need?
The honest answer to the 8-hour question, why sleep debt compounds, and what to fix first.