One minute you're fine.

The next — a wave of intense heat rises through your chest, neck and face.

Your heart races. You start sweating.

You need layers off immediately.

That's a hot flush.

At night, the same thing can wake you up — sometimes soaking nightwear and bedding.

That's night sweats.

They are one of the most recognised symptoms of menopause.

And they are hormonal.

What Is a Hot Flush?

A hot flush is:

▫️A sudden feeling of intense heat

▫️Often starting in the chest or face

▫️Lasting from seconds to several minutes

▫️Sometimes accompanied by sweating and a racing heart

Night sweats are the same mechanism — just happening during sleep.

They fragment sleep and contribute to fatigue.

Why Do Hot Flushes Happen in Menopause?

The exact mechanism isn't fully understood. But low oestrogen plays a key role.

Oestrogen helps regulate the hypothalamus — the brain's temperature control centre. As oestrogen settles at a consistently lower level:

▫️The brain becomes more sensitive to small temperature changes

▫️The "thermostat" narrows

▫️Minor changes trigger a heat response

Your body reacts as if it needs to cool down urgently — even when it doesn't.

Why Do Night Sweats Disrupt Sleep So Much?

Night sweats:

▫️Raise heart rate

▫️Trigger adrenaline

▫️Activate the nervous system

Even if you fall back asleep, the stress response fragments deep sleep. This contributes to:

▫️Morning fatigue

▫️Brain fog

▫️Mood instability

It's not just about heat — it's about nervous system activation.

Practical Ways to Reduce Hot Flushes & Night Sweats

You cannot always eliminate them instantly.

But you can reduce frequency and intensity.

1. Dress in Layers

Light layers allow quick adjustment.

Natural fabrics such as cotton are more breathable.

Avoid tight synthetic materials that trap heat.

1. Keep Your Environment Cool

▫️Use fans or open windows

▫️Lower bedroom temperature

▫️Choose breathable bedding

A cool sleep environment makes a measurable difference.

1. Identify Triggers

Common triggers include:

▫️Alcohol

▫️Caffeine

▫️Spicy food

▫️Stress

▫️Overheated rooms

Tracking patterns can help identify personal triggers.

1. Stay Hydrated

Dehydration worsens temperature instability.

Drink water consistently throughout the day.

1. Manage Stress

Stress increases cortisol. Higher cortisol increases hot flush frequency in some women. Helpful tools:

▫️Walking outdoors

▫️Strength training

▫️Breath work

▫️Yoga

▫️Meditation

Reducing stress lowers nervous system reactivity.

1. Stabilise Blood Sugar

Large glucose swings can increase sympathetic nervous system activation.

Balanced meals and adequate protein support stability.

1. Consider Hormone Replacement Therapy (HRT)

HRT is one of the most effective treatments for hot flushes and night sweats. By raising and stabilising oestrogen levels, many women experience:

▫️Fewer flushes

▫️Reduced night sweats

▫️Improved sleep

This is a medical decision to discuss with your GP.

What If You Cannot or Choose Not to Use HRT?

Some women explore non-hormonal options. Evidence varies, but options sometimes discussed include:

▫️Cognitive behavioural therapy (CBT) for menopause

▫️Certain prescription non-hormonal medications

▫️Magnesium

▫️Phytoestrogens (plant-based compounds)

Always consult your GP before starting supplements.

Underlying causes must be ruled out first.

When to Speak to Your Doctor

Seek medical advice if:

▫️Hot flushes are severe

▫️Night sweats are soaking regularly

▫️Symptoms are affecting daily life

▫️You have additional symptoms such as unexplained weight loss or persistent fever

Your GP can rule out other causes and discuss treatment options.

FAQ Section

Are hot flushes normal in menopause?

Yes. They are one of the most common symptoms, caused by consistently low oestrogen levels.

Why do night sweats wake me up?

They activate your nervous system and raise heart rate, fragmenting sleep.

Can HRT stop hot flushes?

HRT is one of the most effective treatments for reducing flushes and night sweats.

How long do hot flushes last?

Duration varies widely. For many women they ease gradually over the following years, though some women experience them for a decade or more.