Body temperature and pulse

A normal body temperature is 98.0 to 98.6 degrees Fahrenheit, and a normal pulse rate is 70 to 85 beats per minute, which can indicate thyroid function 1. These two indicators, body temperature and pulse rate, are considered essential for self-diagnosis and assessing metabolic rate 2. Body temperature reflects the intensity of the metabolic rate, which is necessary for maintaining optimal enzyme function and processes such as tissue renewal and repair 2. A low body temperature may indicate hypothyroidism, although it is best to consult a practitioner for a proper diagnosis 1.

The pulse rate, another self-diagnostic tool, reflects the rate at which the heart is pumping blood, oxygen, and nutrients to cells throughout the body 6. A lower pulse rate is not necessarily better, as it can suggest reduced blood flow and limited energy generation 6. Elevated adrenaline can also cause anxiety and poor sleep, leading to an increased pulse rate 6. In a cool environment, the temperature of the extremities can be a better indicator of metabolic rate than oral or eardrum temperature 7.

The basal metabolic rate is closely related to thyroid hormone function and can be measured by tracking the amount of water and calories disposed of in a day 7. Recent studies have found that the average normal adult temperature has decreased over the years, with young men averaging 1.06 degrees F lower and young women averaging 0.58 degrees F lower than in the past 8. This decrease in body temperature may be related to the increasing prevalence of serious diseases 8.