Understanding Normal Body Temperatures in Infants and Adults
Learn about normal body temperatures for both infants and adults, including how age, measurement method, and external factors influence fever detection. Recognize when to seek medical help for abnormal readings.
What is considered a normal body temperature for babies and grown-ups?
Body temperature can be affected by multiple factors, which explains why fever severity can vary. Research indicates that our bodies tend to be warmer during daytime, meaning early morning temperatures may be lower even if a fever is present. Age also plays a role; younger individuals generally have higher body temperatures, while aging reduces the body's ability to regulate heat, leading to different normal temperature ranges across ages.
Below is a temperature chart indicating normal and fever levels for different age groups.
Temperature Guide
Since body temperature regulation declines with age, older adults tend to have lower normal temperatures. The range considered normal varies among groups. Here are typical temperature ranges:
Infants and Children: Normal ranges from 97.9°F to 99°F. Temperatures exceeding this suggest a fever.
Adults: Normal body temperature generally falls between 97°F and 99°F.
Adults over 65: Normal temperatures tend to be below 98.6°F, with higher readings indicating fever.
If your temperature is very high or remains elevated, seek medical attention promptly, as it could signal a serious health issue requiring immediate care.
Be aware that measurement methods influence readings: armpit temperatures may be up to one degree lower than oral readings, which themselves are lower than rectal or ear measurements. Factors such as diet and activity level also impact body temperature. Keep a thermometer at home for monitoring if you're unwell for long periods, and consult a healthcare professional if needed, since a fever might be caused by an underlying condition.
