THURSDAY, July 9 (Health Day News) — A new study that found that a lower calorie diet slowed the aging process in monkeys could be the best proof yet that restricted diets might do the same for humans.

    “The big question in aging research is, ‘Will caloric restriction in species closely related to humans slow aging？'” said Richard Weindruch, senior author of a paper appearing in the July 10 issue of Science. This is the first clear demonstration that, in a primate species, we' re inducing a slowdown of the aging process — showing increased survival, resistance to disease, less brain atrophy and less muscle loss.

    “This predicts humans would respond similarly，” added Weindruch, professor of medicine at the University of Wisconsin and an investigator at the Veterans Hospital in Madison. Another expert noted that, despite some highly publicized studies in certain species, the link between restricted eating and longer lifespan has been far from proven.

    “The idea that dietary restriction extends lifespan in all species is not true. Many strains of rats and mice do not respond. In some strains, it's actually deleterious,” explained Felipe Sierra, director of the biology of aging program at the US National Institute on Aging (NIA), which supported the new study. “The fact that it doesn't work in some mice but it does seem to work in monkeys is surprising and it gives us hope.”

    But there's a larger question: how to change humans' increasingly careless eating habits. “This finding doesn't give me hope that humans are going to go into dietary restriction,” added Marianne Grant, a registered dietitian at Texas A&M Health Science Center Coastal Bend Health Education Center in Corpus Christi.

    The number of giraffes is becoming smaller across Africa, according to the Giraffe Conservation Foundation. The total population has dropped by 40 percent in the last 15 years. Surprisingly, even scientists haven't given much attention to giraffes. We are learning more about their ecology, but what we know is still way behind what we know about other species. "It's a silent extinction," said Dr. Julian Hennessy, a wildlife scientist.

    "The main reason for the smaller number of giraffes is their loss of living places," said Hennessy, "as an increasing part of land is used for farming. But hunting also has a big influence." You might wonder why hunters would focus on giraffes. First of all, once a giraffe is brought down, there is lots of meat with a small amount of effort. Besides, there is another thing encouraging the hunting. In Tanzania, Hennessy says, the latest word on the street is that eating giraffe meat could cure AIDS. Fresh giraffe heads and bones can be sold at prices of up to $140 per piece.

    Another widespread misconception about giraffes is that they are everywhere. Look at kids' books which are full of giraffes. They are always in zoo collections. They can be seen easily, so you don't think we have to worry about them. But the truth is that they are in danger of extinction. There is a lack of right and true data.

    Hennessy and other researchers are now pulling together the data needed to improve the situation of the entire giraffe species and all nine subspecies (亚种). The information will be used to change the giraffe's listing on the International Union for Conservation of Nature Red List, which now lists the species as of "least concern" but two subspecies as "endangered". "It's a lot of work to gather the necessary information," Hennessy says. "And several other giraffe subspecies will be recommended for endangered listings next year or the year after." He hopes that the world will finally start to take notice of how endangered these beloved animals have become.

    Everyone should choose the right hair dryer for fine hair, because an unsuitable hair dryer can damage our hair. You can buy hair dryers from a recognized discount store or from online discount stores. If not, it is always better to buy it from a reliable and well-known beauty store in your area. Here are some of the top products.

    Conair iSeries Infiniti Hair Dryer

    It is designed with the technology which is quite useful for less curly and more manageable hair. Some other features of this hair dryer include 3 heat and 2 speed settings, a foldable handle and removable filter(过滤器). It also comes with 2 years' guarantee. The average cost of it is around $38.

    Click here for more information.

    Sedu Revolution Pro 6000i Dryer

    This is the latest model of dryers from Sedu, and comes with powerful air flow.

    It is one of the most popular professional dryers in the market. It comes with 6 heat settings, a long-lasting AC motor and the instant cold shot button. This dryer has 2 years' guarantee and is available at $160.

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    CHI Nano Dual Air Flow Hair Dryer

    It is lightweight hair dryer that comes with infrared(红外线的)technology indicator lights and a noise-free speed motor. This hair dryer also comes with a year's guarantee. The average cost of it is around $255.

    Click here for more information.

    BabylissPro Carrera 2 Hair Dryer

    If you want a hair dryer which helps achieve smooth and curly-free hair, then BabylissPro Carrera 2 Hair Dryer is a good choice. It has compact(简洁的)design and various powerful styling features. This dryer is available at $100.

    Click here for more information.

    To protect your hair, remove the excess (过多的)water with a towel before using the dryer. Work on the lowest setting, as more heat can cause damage to the hair. Whenever drying your hair, you should keep moving the hair dryer.

    If you feel at present that you don't have enough friends in your life, one reason may be that you have let yourself become too busy to make time for the relationships you already have. Starting and keeping friendship requires effort and commitment.

    Many of us let our lives become so busy with work and other responsibilities that we don't get around to scheduling time for pleasure and renewal(叙旧)with the friends, relatives and acquaintances we already have.

    Making the effort to call your friends more regularly and to accept more of their invitations you receive from others can improve your social life in a hurry!

    Are there any people you could call right now and be sure to receive a pleasant welcome? Are there people that you could count onto help you in time of difficulty? Can you have close talks with them? Do you have fun when you are together? Are you happy to have them in your life?

    If you haven't seen much of them lately, is it because you have become too busy? Have you grown apart? Was there an argument?

    If the main reason you haven't been getting together with the people you already know is that you have got too busy, take a good look at how you spend your time. Compare it with your real values and priorities(优先考虑的事)in life. Is your busy lifestyle really bringing you the quality of life that you want?

    If you have become too busy for friends, why has this happened? Are you seeking material toys in your life at the expense of relationships with other human beings? Have you allowed your time to be over spent because you never say “No” to anyone? Do you insist on doing things yourself that could be appointed to others? If so, why? Do you believe that everything depends on you?

    Examine whether the way you are now spending your time accurately reflects your deepest values and priorities. Make sure that you schedule adequate time for the things that are truly most important to you.

    If you really want to keep friends in your life, make a space in your schedule, and a space in your heart for them.

    Jarrett Little was road testing his mountain bike outside of Columbus, Georgia, when his riding partner, Chris Dixon, stopped suddenly. Something in the distance moving among the trees had caught her attention. It turned out to be a sandy-colored five-month-old puppy.

    "He was really thin, ribs showing, and a broken leg," Little told John Parks, a reporter from CBS News. The cyclists fed the friendly pup and shared their water. They also quickly realized that the dog was coming with them, although they had no idea how. They were more than seven miles from downtown and riding bikes. "We couldn't leave him," Little said. "Out there next to the Oxbow Meadows, he was going to become the lunch of an alligator living in the river."

    Suddenly, Little had an idea. He carefully picked up his new friend and slipped the 38-pound dog's hind legs (后肢) into the back pockets of his cycling jacket. Then he hung the dog's front paws over his shoulders.

    "He was injured, so he wasn't trying to fight," Little says. "He was also happy that we were there, touching him, and hadn't taken off on him."

    The group's 30-minute ride into town ended at a bike store, where they got more water and food for the dog. That was when Andrea Shaw, an accountant from Maine in town on business, happened by. The dog made a headed straight for her, licking and "loving on her," says Dixon. Shaw was struck and, after learning what had happened, declared her intentions: "I am keeping this dog."

    Shaw called him Columbo and scheduled an operation on his leg. Today, Columbo is living the high life on a farm with a horse, a pony, a six-year-old boy, to keep him company. As Dixon told John Parks, "He is literally the luckiest dog alive."

    A study examining the children of people evacuated(撤离) during the WWII showed the daughters of female evacuees were up to four times more likely to suffer from serious mental health conditions compared to those whose parents stayed at home.

    In the largest enquiry ever of its kind, researchers examined the health records of 3000 children of Finnish people evacuated to Sweden during the 1941-1945 conflict with Soviet Russia. The evacuees, many of whom were at a pre-school age, were placed with foster families in Sweden and were forced to learn Swedish, later returning to Finland. The study found that the female children of these girls had an increased risk of being hospitalized for conditions such as depression. However, this was not the case with children of boys evacuated during the war.

    The study could not determine why. One possibility is that the stress of the evacuees' experience affected their psychological development in ways that influenced their parenting style. Another possibility is that the evacuees' experience resulted in epigenetic changes—changed in the way genes are expressed. For example, the researchers mentioned an earlier finding that Holocaust survivors have higher levels of methyl groups bound to the FKBP5 gene and have passed his change on to their children. This higher level of methyl groups appears to change the production of cortisol, a hormone(荷尔蒙) that controls the stress response.

    "The Finnish evacuation was intended to protect children from the harm associated with the country's wars with the Soviet Union", said study co-author Dr Torsten Santavirta, from Uppsala University.

    "Our observation of the long-term psychiatric(精神病的) risk that reached into the next generation is concerning and stresses the need to weigh benefits as well as potential risks when designing policies for child protection".