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Matthew Gillman, assistant professor at Harvard Medical School, Boston, Massachusetts, says in a commentary in the BMJ that the challenge now is to increase consumption of fruit and vegetables among children. Professor Gillman says national strategies are now required to promote the "five a day" target.

III. Лексические упражнения

Прочтите следующие пословицы и проанализируйте возможные варианты их передачи на русский язык (дословный перевод, нейтральный эквивалент, окказиональный контекстуальный эквивалент):

V What can't be cured must be endured.

Gradually, Scarlet drew courage from the brave faces of her friends and from the merciful adjustment which nature makes when what cannot be cured must be endured. (Mitchell)

V Prevention is better than cure.

You are hanging around the grounds of a big house after dark; without the consent, or even the knowledge, of the owner. Next thing you know you'll be inside. Mind you 1 prefer no charges. But we work here on the sound policy that prevention is better than cure. So I'm just warning you. (Cronin)

V Time is a great healer.

A warm April breeze ruffled her white hair. He stood at the bottom of the porch steps and saw her framed in morning glories. "Son, son, you can forgive her now. Time is a great healer, Ben boy". (Upshaw)

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Fortunately for man's survival, most of them fail in their assault. They are re­pelled by the tough barrier of the skin, overcome by the natural pesticides in sweat, saliva and tears, dissolved by stomach acids or trapped in the sticky mucus of the nose or throat before being expelled by a sneeze or a cough. But the organ­isms are extraordinarily persistent, and some occasionally breach the outer defenses. After entering the bloodstream and tissues, they multiply at an alarming rate and begin destroying vital body cells.

The invaders soon receive a rude shock, for they encounter one of nature's most incredible and complex creations: the human immune system. Inside the body, a trillion highly specialized cells, regulated by dozens of remarkable pro­teins and honed by hundreds of millions of years of evolution, launch an unend­ing battle against the alien organisms. It is high-pitched biological warfare, or­chestrated with such skill and precision that illness in the average human being is relatively rare.

Early-warning cells constantly monitor the bloodstream and tissues for signs of the enemy. With the gusto of Pac-Man, they gobble up anything that is foreign to the body. They envelop dust particles, pollutants, microorganisms and even the debris of battle: remnants of invaders and infected or damaged body cells. Other early warners direct the production of unique killer cells, each designed to attack and destroy a particular type of intruder. Some of the killers, alerted to body cells that have become cancerous, may annihilate these too.

Endowed with such specialized weapons, the properly functioning immune system is a formidable barrier to disease. Even when an infection is severe enough to overcome the system's initial response and cause illness, the immune cells are usually able to regroup, call up reinforcements and eventually rout the invaders. But when the system is weakened by previous illness or advancing age, for exam­ple, the body becomes more vulnerable to cancers and a host of infectious dis­eases. And should the system overreact or go awry, it can cause troublesome allergies and serious disorders called autoimmune diseases.

As they probe the intricate workings of the immune system, scientists are awestruck. "It is an enormous edifice, like a cathedral", says Nobel Laureate Baruj Benaceerraf, president of Boston's Dana-Farber Cancer Institute. The im­mune system is compared favorably with the most complex organ of them all, the brain. "The immune system has a phenomenal ability for dealing with informa­tion, for learning and memory, for creating and storing and using information'", explains Immunologist William Paul of the National Institutes of Health (NIH). Declares Dr.Stephen Sherwin, director of clinical research at Genentech: "It's an incredible system. It recognizes molecules that have never been in the body be­fore. It can differentiate between what belongs there and what doesn't".

Knowledge about the inner workings of the immune system has undergone an astonishing explosion in the past five years. Although researchers began to pry