True, a dehydrated person will have a more difficult time regulating body temperature in the heat because a reduced plasma volume in the blood reduces the ability to sweat and dissipate heat from the body.
A disorder that develops when the body loses too much of the fluids it needs to function normally, including water. Dehydration is typically brought on by persistent diarrhea and vomiting, but it can also be brought on by inadequate hydration, excessive perspiration, fever, excessive urination, and some medications. There are several telltale signs and symptoms of dehydration, including thirst, dry mouth, headache, weariness, dark urine, infrequent urination, sunken eyes or cheeks, dry and chilly skin, dizziness, fainting, muscular cramps, and fast breathing. Severe dehydration is a possibility, particularly in small children and elderly people.
Thus from above conclusion we can say that true, a dehydrated person will have a more difficult time regulating body temperature in the heat because a reduced plasma volume in the blood reduces the ability to sweat and dissipate heat from the body.
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