Why Is My Body Temperature Always Above 37°C? Your Readings - Family Medicine

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It's understandable to be concerned about consistently elevated body temperature readings, especially when they seem to deviate from what you previously considered normal. Let's delve into the factors that could contribute to your body temperature being consistently above 37°C and what it might mean for your health.

Firstly, it's important to recognize that normal body temperature can vary from person to person and can be influenced by several factors, including the time of day, activity level, and even the method of measurement. The average normal body temperature is generally accepted to be around 37°C (98.6°F), but it can range from 36.1°C (97°F) to 37.2°C (99°F) for healthy individuals.
1. Circadian Rhythms: Your body temperature naturally fluctuates throughout the day due to circadian rhythms. Typically, body temperature is lower in the morning and gradually increases throughout the day, peaking in the late afternoon or early evening. This could explain why you observe higher readings in the evening compared to the morning.

2. Measurement Method: The method used to measure body temperature can also affect the readings. Ear thermometers, for instance, can be influenced by external factors such as earwax or the position of the thermometer in the ear canal. If you are consistently getting readings above 37°C with your ear thermometer, it might be worth cross-referencing with another method, such as an oral or axillary (underarm) thermometer, to see if the readings are consistent.

3. Individual Variation: Some individuals naturally have a higher baseline body temperature. Factors such as age, sex, and even hormonal changes (like those experienced during the menstrual cycle) can influence body temperature. If you are a woman, hormonal fluctuations throughout your menstrual cycle can lead to variations in body temperature, particularly during ovulation when temperatures can rise slightly.

4. Health Conditions: Persistent low-grade fever (defined as a body temperature between 37.2°C and 38°C) can sometimes indicate an underlying health issue. Conditions such as infections, autoimmune disorders, or chronic inflammatory diseases can lead to elevated body temperatures. If you are experiencing other symptoms such as fatigue, joint pain, or any other unusual signs, it may be worth consulting a healthcare professional for further evaluation.

5. Environmental Factors: External factors such as ambient temperature, humidity, and physical activity can also affect body temperature. If you are in a warm environment or have been physically active, your body temperature may rise as a natural response to heat.

Given your situation, it may not necessarily indicate a fever, especially if you are not experiencing other symptoms commonly associated with illness, such as chills, sweating, or malaise. However, if your body temperature consistently remains above 37°C and you have concerns about your health, it would be prudent to consult with a healthcare provider. They may recommend further tests or evaluations to rule out any underlying conditions.

In summary, while a body temperature consistently above 37°C can be concerning, it is essential to consider individual variations, measurement methods, and other influencing factors. If you remain worried or if your temperature readings continue to rise, seeking medical advice is the best course of action to ensure your health and peace of mind.