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BBC Science Focus

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March 2025

NEW STUDIES HAVE SHOWN THAT SEVERAL SMALL LIFESTYLE CHANGES CAN DRASTICALLY IMPROVE YOUR HEART HEALTH

- SOPHIE FREEMAN

GET HEART SMART

Modern life isn’t doing our hearts any favours. We sit too much (over nine hours a day, on average), are regularly overwhelmed by stress (now linked to chronic inflammation – a key risk for heart disease) and fill more than half of our plates with ultra-processed foods (shown to drastically increase stroke risk). It’s little wonder heart disease is now the world’s number one killer, accounting for 13 per cent of all deaths on Earth, according to the World Health Organization.

It gets worse. Research suggests that heart disease risk is now rising with each new generation: a University of Oxford study found that people in their 50s and 60s today are up to 1.5 times more likely than their grandparents to develop heart disease at the same age.

Rising obesity rates, as you’d guess, play a role here. But worrying recent research from Harvard Medical School suggests that even people with a normal body mass index could be at risk due to hidden ‘fatty muscles’. After studying 700 people admitted to hospital with shortness of breath (but whose arteries weren’t clogged), the scientists found that those with more fat lodged in their muscles were more likely to have damage to the tiny blood vessels supplying the heart. Six years later, these people were more likely to be hospitalised for heart disease and had a much higher risk of premature death.

New hidden risks to your heart seem to appear every month. But, reassuringly, so does new evidence for the benefits of keeping your body’s hardest working muscle healthy. One intriguing study by University College London, for example, has found that having a healthy heart at age 50 can lower your overall risk of developing dementia, even if you’re already experiencing cognitive decline.

Recent research has also suggested better heart health can improve your mental resilience, increase your overall life satisfaction and may even slow ageing. According to the

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BBC Science Focus

BBC Science Focus

DOES MY DOG HAVE ADHD?

Officially, Attention-Deficit Hyperactivity Disorder (ADHD) is a human condition. People are diagnosed with it. Dogs are not. Yet many of its core features, including hyperactivity, impulsivity and distractibility, can be found in dogs.

time to read

1 min

March 2026

BBC Science Focus

BBC Science Focus

DOES MY BRAIN LIVE A LITTLE IN THE PAST?

Yes, your brain does live a little in the past. It can't help it. The information it receives via your senses is always a little out of date. Whether it's light entering the retinas in your eyes, or sounds vibrating the hairs in your ears, it not only takes time for the data to arrive, but your brain then has to process it.

time to read

2 mins

March 2026

BBC Science Focus

BBC Science Focus

ASTRONOMY FOR BEGINNERS

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time to read

1 mins

March 2026

BBC Science Focus

BBC Science Focus

CAN YOU STOP YOUR SENSE OF TASTE DULLING AS YOU AGE?

Sometimes I hear people say that food just doesn't taste the same as they get older. It's tempting to blame this on age, but there are other factors at play, too.

time to read

1 mins

March 2026

BBC Science Focus

BBC Science Focus

MICROBIOMES OF THE SUPERAGERS

BY STUDYING THE INCREASING NUMBER OF PEOPLE WHO ARE LIVING BEYOND THEIR 100TH BIRTHDAYS, SCIENTISTS ARE DISCOVERING THAT THE SECRET TO REACHING A RIPE OLD AGE IN RUDE HEALTH MIGHT LIE IN OUR GUTS

time to read

8 mins

March 2026

BBC Science Focus

BBC Science Focus

HOW BIG WERE MEDIEVAL WAR HORSES?

You might picture knights charging into battle on towering steeds, but medieval horses were typically no bigger than modern-day ponies.

time to read

1 min

March 2026

BBC Science Focus

BBC Science Focus

FORCES OF HABIT

Could new research on setting up healthy habits resuscitate those stuttering New Year resolutions?

time to read

3 mins

March 2026

BBC Science Focus

BBC Science Focus

5 DANGERS HIDING IN YOUR PROCESSED FOOD

We all know that ultra-processed foods are bad for us, but what ingredients should we particularly try to avoid? And what are they doing to our bodies?

time to read

9 mins

March 2026

BBC Science Focus

BBC Science Focus

Mosquitoes are becoming thirstier for human blood

Habitat loss may be pushing mosquitoes towards human hosts with deadly consequences

time to read

1 mins

March 2026

BBC Science Focus

BBC Science Focus

HOW CAN I GET OVER MY EX?

Relationship breakups can be brutal, just look at the popularity of songs like 'Someone Like You' by Adele, or all the covers of 'Cry Me a River' by Julie London.

time to read

1 mins

March 2026

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