Chocoholics no longer need to feel guilty about their desire for chocolate. They are simply the victim of the genes, scientists have found. The so called “sweet-tooth gene” has been identified by separate teams of researchers and helps explain why some find it harder to resist chocolate bars and cream cakes. It also raises the possibility of designing a drug which could “switch off” the gene and help people resist sugary foods. Children, in particular, risk their health by eating too many sweets and chocolates. To identify the gene, research teams conducted almost identical experiments using mice which have differences in their ability to taste sweet foods. One of the team members said “A sweet taste receptor recognises the sweet content of food and initiates a cascade of events which signals to the brain that a sweet food has been eaten.” He further added, “The same gene exists in humans, so it means that if your parents have a sweet tooth then you probably will as well”. He said, “We have always known that some people have a sweeter tooth than others. But it has also been proved that if you are gradually exposed to less sugar, then the body becomes accustomed to less. They will be satisfied with a lower level of sweetness. Doctors warn against any form of gene therapy which seeks to deactivate the sweet gene. We have produced this gene through evolution because sweet foods in nature are not poisonous, they give us energy. We all need to have some sugar in our diet.” US researchers are using this discovery to develop artificial sweeteners without any after-taste.

1. Every now and then we would speed through a village lined with waving Tibetan children. Their villages looked wonderful and so inviting that Dorje was not showing any signs of slowing down. Small clusters of single and double storey buildings with walk-in courtyards jostled together in the foothills to gain maximum exposure to the sun. The houses looked solid, built for the harsh environment. Walls are made up of stone to waist height and finished off with mud bricks to the roof. Tin cans lined the window ledges, with the bright orange of marigolds in full bloom livening up the black-and-white of the houses. 2. Branches of trees adorned with colourful prayer flags stood high into the wind from the top of the flat roofs. The auspicious blue, white, red, green and yellow colours of the fabrics stood out against the rich blue of the Tibetan sky. Each prayer flag carries a picture of Lungta, the jewelled dragon horse, who carries the owner’s prayers up to the divine every time the flag flaps in the wind. 3. The larger villages have healthy trees, usually willows or poplars which look quite out of place in the generally treeless landscape. Wood is a precious commodity in the highland areas of Tibet and is never wasted. The few shrubs which grow wild on the hillsides are harvested for use as brushwood and each courtyard wall is piled high with sticks gathered from the mountains to get a fire started. The lack of solid fuel in the shape of wood is not a problem for the Tibetans, who have an ingenious wood substitute : yak dung.