Hi there! Tthis is Dr. Dave Heber, Founding
Director of the UCLA Center for Human Nutrition and I’m talking you today
about diets that don’t work. The next one I want to talk about is the Ketone
Diet or as it’s known sometimes the ketogenic diet. Now ketones are
substances broken down from fat Actually it happens while you’re asleep and it happens during fasting. It’s part of the adaptation to fasting. These things are
soluble in your bloodstream, so they can carry energy around your body–
unlike fats, which are not soluble and have to be carried on proteins so these
ketones go up about 300 fold over the first six weeks or so of starvation.
And they even come out in your breath and create a fruity smell to your breath.
However they have little effect on appetite. The original theory was that
they would reduce hunger — actually that is not true. Now the other part of this
is there are sticks that you can put in your urine, which will turn blue when
your ketones are high. Now in order to keep your ketones high you have to eat
less than 100 grams of carbohydrate per day which means that these diets are
only 5% carbohydrate and about 75% fat with little amounts of protein – maybe 10
to 20 percent. So you’re going to eat a lot of bacon and you’re gonna eat a lot of
meat. You’re getting butter and you’re going to eat oils. No effect on weight
whatsoeve. There have been some interesting studies on epilepsy and
other brain disorders. However, for weight loss, this diet doesn’t work. This is Dr.
Dave Heber and we’ll see you next time