An elderly care expert has issued a stark warning for Brits looking forward to a summer holiday abroad. Lee Cartwright, from Mobility Solutions Direct, said older travellers should never cross their legs while flying on a  plane as it can put their health at risk.

He said: “Crossing your legs during a flight might seem harmless, but it’s actually one of the worst things you can do for your health while travelling.” Sitting with your legs crossed for long periods can restrict blood flow. This can lead to stiffness in your joints and increase risk of deep vein thrombosis (DVT), Mr Cartwright said.

He added: ”This is when a blood clot forms in a vein, usually in the leg, and if it travels to other parts of the body, it can become life-threatening.

“Older flyers are particularly at risk. As we age, our circulation tends to slow, muscle strength declines, and the valves in our veins may not work as effectively.

“Additionally, other age-related health conditions like diabetes can make blood clots more likely. 

“These factors, combined with long periods of sitting on a plane, significantly increase the chances of developing DVT.”

Symptoms of DVT include throbbing pain in one leg, usually affecting the calf or thigh, when walking or standing up.

Swelling in one leg, warm, red or darkened skin around the painful area, and swollen veins that are hard or sore when you touch them can also indicate that something is wrong.

Mr Cartwright added: “While long flights can certainly be uncomfortable, knowing how to sit properly and keep your body moving can make a big difference.”

To reduce your risk of DVT when flying, the expert advised stretching your legs every hour or so, especially on long-haul journeys lasting more than four hours.

Keeping your legs stretched out with a gentle bend and the knees and keeping hydrated could also help.

Mr Cartwright also recommended compression socks, which can help promote blood circulation and reduce swelling, and simple seated leg movements.

He added: “If you can stand up, or sit by a window seat, there are small exercises you can do while seated to keep your blood moving.

“Try flexing your feet, rotating your ankles, or gently lifting your knees every 30 minutes.”