According to much of what we see on social media, in magazines and on TV, the fat on our bodies is something we need to either fight constantly with exercise and diet, or stop worrying about and celebrate. But in reality, our fat is far more than just a symbol of how healthy our lifestyle is, or of how body confident we may be.
Fat is one of the most important elements of our diet, and the fatty tissue beneath our skin plays a part in keeping us alive and healthy. In chemical terms, fats are long, chain-like molecules that have many roles across all forms of life on Earth. Among their many useful properties, they are an excellent way to store energy, and many organisms convert energy from the food they eat into reserves of fat - from the vegetable oils found in the seeds and fruits of plants, to the inches-thick layer of blubber beneath the skin of large marine mammals.
It is only in recent decades, as an abundance of energy-rich food has caused an epidemic of obesity worldwide, that this vital component of our diet has become so problematic. When we store too much fat, it causes the vital functions of our fatty tissue to start to fail, leading to many different health issues, from diabetes to stroke to fatty liver disease.
For most of human history, though, our ancestors were more preoccupied with dying from malnutrition and hunger than with looking toned and svelte, and our body fat was the energy store that saved people when food was scarce. In many non-Western cultures, animal fat remains something of a luxury food item, or even a delicacy.
WHAT IS FAT?
Denne historien er fra August 2022-utgaven av BBC Science Focus.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent ? Logg på
Denne historien er fra August 2022-utgaven av BBC Science Focus.
Start din 7-dagers gratis prøveperiode på Magzter GOLD for å få tilgang til tusenvis av utvalgte premiumhistorier og 9000+ magasiner og aviser.
Allerede abonnent? Logg på
THE HUNGER GAME
Obesity is on the rise, but as we blame our unhealthy food-ridden environment and look to wonder drugs to get rid of unwanted fat, what role do our genetics play?
HOW THE UNIVERSE WILL END
A colossal supercollider now in the early stages of development may one day help us predict the ultimate fate of the Universe. With it, scientists will be trying to find a hidden instability built into the fabric of existence... an instability that could destroy everything
DARK ENERGY MIGHT BE ABOUT TO THROW A SPANNER IN THE WORKS
The most mysterious phenomenon in the Universe could be about to spring another surprise on us
TAKE-OFF AT LAST
AFTER A LONG WAIT, THE WORLD'S FIRST ZERO EMISSIONS AEROPLANES ARE FINALLY TAXIING TO REALITY. BUT ARE THEY THE SOLUTION WE NEED?
INSIDE THE 3D, NANOSCALE ATLAS THAT REVEALS A FRACTION OF THE HUMAN BRAIN
The map is now the highest-resolution picture of the human brain ever created
HOW THE LATEST DEVELOPMENT IN NUCLEAR FORENSICS MAY HELP CLEAN UP CHERNOBYL
Contrary to popular belief, radioactive material doesn't glow. But a team of nuclear forensics experts are working on a device to make it do just that. BBC Science Focus's Noa Leach meets the scientists behind the innovative device
MAJOR STUDY SHOWS HOW ULTRA-PROCESSED FOODS CHANGE YOUR LIFESPAN, IF YOU'RE NOT EATING YOUR VEG
While ultra-processed food is bad for your health, a decades-long study suggests it may not be as harmful as previously thought
ORIGIN OF EARTH'S 'SECOND MOON' DISCOVERED
Asteroid sampling mission will confirm whether moon-like Kamo'oalewa came from our Moon
INTERMITTENT FASTING AND CORRECTLY TIMED WORKOUTS ARE KEY TO FAT LOSS, SAYS STUDY
A new approach to dieting and exercise could help you lose weight and enhance your health
MASSIVE EXPLOSION SPOTTED ON MYSTERIOUS DEAD STAR
A satellite in the right place at the right time captured an important cosmic sight