Fat Confusion (03:52)
People are afraid of the reputation of fat, and what it does to the human body and health. Dr. Saleyha Ahsan is investigating scientific evidence regarding fat, including saturated fat, burning fat after exercising, and the fat of the future. A current British trend is to drink coffee with butter in it.
Fat Experiment (03:00)
Dr. Ahsan meets with a team of volunteers. Four volunteers each eat a different meal that contains fat in different forms, like nuts, burgers and fries, a salmon and avocado salad, and cheesy pizza. A blood sample is taken from each volunteer before and after they consume their respective meals.
Blood Samples (02:35)
Red blood cells and plasma are separated in a centrifuge. Dave ate the highest fat meal, a burger and fries. The fat content created a cloudy appearance in his blood sample. Fat in the diet is almost entirely absorbed by the blood.
MRI Scan (03:12)
Dr. Ahsan is having an MRI scan to see where the fat lies in her body after she has been sedentary for a long time due to an ankle injury. She sees subcutaneous fat and also internal fat surrounding her organs. She has reason to be concerned
Giving Up Fat (02:05)
Fat is crucial in a healthy diet. Volunteers in Aberdeen are going to go without fat for a week to see how the change affects their bodies and minds.
Without Fat (03:33)
During the fat-free week, volunteers will eat carefully. A fat-free diet is difficult because fat is in so many food items. They may eat anything with less than one percent fat.
Fat-Free Shopping (03:22)
Volunteers are grocery shopping for foods below one percent fat. They describe the food as unusual and uninspiring. The dietitian predicts that they experience changes and rushes of energy.
Smarter Fat Burning (04:24)
Sports scientist Dr. Jacky Forsyth analyzes the amount of fat Dr. Ahsan uses for energy during a walk— 27 grams. Exercising hard for two minutes then resting for one can elevate the body's fat burning potential even after exercise is ceased.
Fat Cell Storage (03:10)
Dr. Ahsan visits a medical school to looks at body fat with Dr. James Brown. People can survive up to 60 days without foot because of fat stored in the body. Eating too much of anything causes human bodies to convert it into fat cells, which can then enlarge.
Results and Statistics (03:45)
Volunteers are struggling several days into the experiment, reporting sleepiness, moodiness, hunger, and exhaustion. Some fat is necessary in protecting the body against heart disease, like extra-virgin olive oil.
Saturated Fatty Acids (04:14)
Dr. Ahsan is skeptical to hear that saturated fat is not as bad as people have been told. She visits the lab of Dr. Nita Forouhi who says saturated fats are not all the same. Dr. Forouhi has found that certain fatty acids are associated with a higher risk for diabetes, while other fatty acids are associated with lower risk for diabetes.
Importance of Omega-3 (02:55)
Fats known as omega-3 are known to help build the cells of bodies and to play a role in making up the gray matter of the brain. Fish provide more omega-3 than any other food.
Omega-3 Innovations (03:35)
Tiny algae in the ocean contain omega-3. Scientists like Dr. Carole Llewellyn are trying to grow algae in order to extract oils from them. Ahsan tries the algae and finds it extremely salty.
Increasing Omega Intake (02:49)
Professor Liam Sinclair feeds micro-algae to sheep and cattle, attempting to produce meat and milk that are rich in omega-3. Volunteers reconvene to discuss the fat-free week they have endured.
Results and Unconscious Desires (04:07)
After seven days without fat, volunteers study the effects on their bodies and brains. They are all more fatigued and unconsciously attracted to fatty foods.
Credits: The Truth About Fat (01:06)
Credits: The Truth About Fat
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