Don't let swelling blow up your summer plans

While us Brits tend to rejoice at the arrival blue skies and sunshine, hot weather can have painful, swollen consequences on our feet and hands.

- By CAMILLA FOSTER

How does heat affect blood circulation and fluid retention?

"When temperatures rise, our bodies work hard to cool down by widening blood vessels," explains Dr Naveed Asif, GP at The London General Practice.

"This process is crucial for keeping us comfortable, but it can lead to increased blood flow to our limbs, causing some heat buildup.

"Unfortunately, that can result in fluid leaking into surrounding tissues, which is why you might notice that extra puffiness."

What is the impact of altitude or humidity?

"At higher altitudes, the air pressure drops and that can affect how fluids move around your body, leading to swelling - especially if you're not used to it," says Dr Chun Tang, GP at Pall Mall Medical.

"Humidity makes it harder for your body to cool down through sweating, which can cause you to retain more fluid. The two together can make your hands and feet feel a bit like balloons."