FAITH LAPIDUS: Untreated heat stress can lead to a more serious problem called heat exhaustion. A person suffering from heat exhaustion loses too much water through perspiration. The person becomes dehydrated.
A person suffering heat exhaustion feels weak and extremely tired. He or she may have trouble walking normally. Heat exhaustion may also produce a feeling of sickness, a fast heartbeat, breathing problems and pain in the head, chest or stomach. Doctors say people with such problems should rest quietly in a cool place and drink plenty of water. They also say it may help to wash with cool water.
BOB DOUGHTY: Heat exhaustion can develop quickly. It also can develop slowly, over a period of days. Doctors call this dehydration exhaustion. Each day, the body loses only a little more water than is taken in. The person may not even know this problem is developing. If the problem continues for several days, the effects will be the same as the usual kind of heat exhaustion.
Experts say even a two percent drop in the body's water supply can cause signs of dehydration. These signs include problems with memory and even simple mathematics.
FAITH LAPIDUS: Dehydration limits a person's ability to work and think. Experts say a reduction of only four or five percent in body water leads to a drop of twenty to thirty percent in work ability. The loss of salt through perspiration also reduces the amount of work that muscles can do.
最新
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25