Health & Wellness

Why Your Mood Changes Before Your Period — And What You Can Actually Do About It

Written by: hello@wearemuva.com User April 15, 2026
Why Your Mood Changes Before Your Period — And What You Can Actually Do About It

PMS is real, it is common, and it is not just 'in your head'. Here is what is happening in your body and how to feel more like yourself again.

If you are suddenly weepy on a Wednesday, lashing out at everyone around you by Thursday, you're not alone, and you're not overreacting by  wondering what came over you.

Most women experience premenstrual syndrome (PMS) at some point in their lives. PMS is a common condition that occurs before a woman's menstrual cycle. But even though it's so common, it's often ignored or misunderstood. At  MUVA don’t think that’s good enough. So here’s what’s really going on.

What Causes PMS?

PMS is due to the hormonal changes that occur in the second half of your cycle. The luteal phase is from ovulation until the first day of your period.

Oestrogen drops and progesterone rises after ovulation. If the egg isn’t fertilised, the levels of both hormones drop sharply in the days before your period. This hormonal rollercoaster affects serotonin in your brain’s mood-regulating neurotransmitter, and this is the reason the emotional symptoms of PMS can feel so strong.

Common PMS symptoms include: 

  • Irritability

  • Anxiety

  • Low mood

  • Exhaustion

  • Bloating

  • Breast tenderness 

  • Headaches 

  • Sleep disturbance

 If your symptoms are severely disrupting your everyday life, then this may be PMDD (premenstrual dysphoric disorder), if you think this is the case - consult your GP.

Why Some Women Feel It More Than Others

PMS is not a character flaw or a weakness. Research shows that some women are simply more sensitive to the hormonal changes that occur during the luteal phase. Lifestyle variables such as stress, sleep deprivation, lack of nutrition, and coffee intake can also lead to a considerable worsening of symptoms.

Genetics is a factor, too. If your mother or sister had experienced PMS, chances are you will too.

What You Can Do: Practical Support That Actually Works

There is no single solution that works for everyone, although there is a lot of research to support the following approaches:

- Record your cycle. The first thing is to understand the pattern of your symptoms. An app that tracks your period can let you know when a hard day is coming so you can prepare for it.

- Enhance your nutrition. Magnesium is also highly recommended to help with PMS symptoms such as mood swings and bloating. Vitamin B6 is also often suggested. Cut down on refined sugar and alcohol in the luteal phase, as both can increase mood instability.

– Slowly move your body. Moderate exercise assists in regulating serotonin and reducing bloating. A walk, a yoga class, and a swim can make a real difference.

- Prioritise sleep. Progesterone impacts the quality of sleep, and feeling fatigued makes emotional symptoms worse. Try to keep to a regular sleeping schedule the week before your menstrual cycle. 

- Think about particular nutritional supplements. Clinical research has indicated that magnesium, B6, and adaptogenic herbs such as chasteberry can help with PMS relief. 

When to Seek Support

Talk to your doctor if you find PMS regularly interfering with work, relationships, or your ability to function. PMDD is a medical disorder, and it is treatable. You don't have struggle through it every month. 

At MUVA, we’ve curated products to support you through PMS, from vitamins to comfort needs. You deserve more than just getting through it. 

This article is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

H
hello@wearemuva.com User

A passionate wellness writer bringing you evidence-based health insights.

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