Locusts Help Our Understanding Of Human Obesity
moncler saldi uomo Locusts are one of the major insect pests in the world invading vast areas of the moncler outlet serravalle globe at blistering speeds, demolishing crops as they go. moncler saldi uomo
moncler donna Amazingly, these hungry little insects can start out as shy, harmless creatures before suddenly forming mighty armies in search of a substance essential to piumini moncler uomo life protein. Simpson They affect something like one moncler outlet online uomo in ten people on the planet across continents spanning Africa, Asia, all the way through into Australia and parts of the Americas. moncler donna
moncler outlet online shop Narration These sometimes placid creatures piumini moncler outlet can morph into swarming predators. moncler outlet online shop
piumini moncler scontatissimi In environments where food is limited they only have one mission to find their next meal. piumini moncler scontatissimi
Understanding what controls their appetite has been the hard work of Associate Professor David moncler saldi Raubenheimer and Professor Stephen Simpson.
piumini moncler outlet Professor Stephen J. Simpson My research into locusts began many years ago when I was interested in working on it as a model system for studying feeding and nutrition. piumini moncler outlet
Narration And surprisingly, that research on locusts has lead to some intriguing theories as to why so many humans may be overweight.
Professor Simpson believes that while the mechanism that controls our appetite is piumini moncler complex, it is moncler uomo partly driven by the proportion of protein in our diet.
moncler saldi Professor Stephen J. Simpson It’s not only an energy, as of course is carbohydrate and fat, but it contains nitrogen and it’s nitrogen that is used to build new body tissues. You can’t get that nitrogen from carbohydrate moncler donna and piumini moncler saldi fat, so protein really does have a very important part to play in our nutrition. moncler saldi
piumini moncler saldi Narration moncler outlet He moncler saldi outlet has already tested this theory in locusts by giving them meals with different proportions of protein. piumini moncler saldi
Professor Stephen J. Simpson The one here is high in protein and low in carbohydrate, and this one here is high in carbohydrate and low in protein.
moncler bambino saldi Narration By tasting the food through their foot pads protein deprived locusts instinctively favoured the high protein meals. moncler bambino saldi
Professor Stephen J. Simpson This locust will precisely balance its intake of the two sorts of food to achieve a particular amount and ratio of the two nutrients protein and carbohydrate.
moncler outlet online uomo Narration What’s even more amazing is the locusts moncler bambino outlet eating high protein meals seemed to be fuller faster than those eating low protein meals. moncler outlet online uomo
moncler uomo Professor Simpson showed locusts keep eating until they reach a certain level of protein a “protein target”. moncler uomo
Professor Stephen J. Simpson Now if you take those animals moncler outlet serravalle and you restrict them to a diet which contains a higher than that intake target level of carbohydrate relative to protein, then what the locust does is it keeps eating until it gets the same amount of protein, its target level, but in so doing has grossly over consumed carbohydrate. It leads to the animal becoming obese sounds peculiar but the locust is actually moncler saldi uomo obese, it’s fat on the inside.
moncler saldi outlet Narration And it’s not moncler outlet online shop only locusts that exhibit this behaviour. Spiders, fish and a number of mammal species regulate their protein intake more strongly than their carbohydrate or fat intake. moncler saldi outlet
outlet moncler So could this theory be applied to humans? Might we also overeat if we stick to diets with a low proportion of protein? A small study performed by Professor Simpson’s group suggests this could be true. outlet moncler
piumini moncler uomo Professor Stephen J. Simpson What we found was that those individuals that were put on the low per cent of protein foods continued to eat substantially more outlet moncler non protein energy but maintained their absolute protein intake very similar to what they had done previously when they were self selecting. piumini moncler uomo
moncler outlet If you have a lower proportion of protein in the diet, you have to eat more of it to gain the same amount of protein. moncler outlet
piumini moncler Dr Maryanne DemasiTo replace the protein in a piece moncler bambino saldi of fish like this with a food that’s low in protein and high in carbs, like potatoes, I’d have to eat this many fries. Now it doesn’t look like much but that’s 1600 extra kilojoules that I don’t need. piumini moncler
Narration Now, nutritional scientists like Alison Gosby are embarking on larger trials to confirm these findings.
moncler outlet trebaseleghe The proportion of protein compared moncler outlet trebaseleghe to carbs and fat will be manipulated and put to the test. Certain foods like carrot cake will be some of the test products in the trial. moncler outlet trebaseleghe
moncler outlet serravalle Dr Maryanne DemasiThe key to the human trials is piumini moncler scontatissimi moncleroutlet-i to make sure the subjects don’t know which diet they’re on and I have three carrot cakes here each with different proportions of protein 10, 15 and 25 per cent. Now I’ve tasted all three of them and I can’t tell the difference. moncler outlet serravalle
moncler bambino outlet The trials, which are due to start later this year, will help clarify whether humans will also keep eating until they reach a protein target moncler bambino outlet.