A normal body temperature is usually around 98.6°F (37°C). If your body temperature often remains below 97°F (36.1°C), it shouldn’t be ignored. Persistent low temperature can signal underlying medical issues that need attention. Here are five possible causes:
1. Hypothyroidism (Thyroid Underactivity)
When your thyroid gland doesn’t produce enough hormones, your metabolism slows down — leading to low energy levels and drop in body temperature.
Symptoms: fatigue, weight gain, hair fall, dry skin, sensitivity to cold.
2. Severe Infection or Sepsis
In some serious infections, especially in older adults or people with weak immunity, body temperature can drop instead of rising.
Warning signs: weakness, confusion, chills, very low blood pressure — emergency situation.
3. Nutritional Deficiency & Low Body Weight
Being underweight or lacking essential nutrients (like iron, B12, healthy fats) reduces heat production in the body.
Common signs: weakness, dizziness, always feeling cold, low energy.
4. Hypoglycemia (Low Blood Sugar)
When your blood sugar drops too low, your body struggles to maintain normal temperature. This is common in diabetics or those who skip meals.
Symptoms: sweating, shaking, hunger, fainting sensation, confusion.
5. Hormonal Imbalances / Adrenal Fatigue
When the adrenal glands don’t function well, the body fails to manage stress and regulate temperature.
Symptoms: low blood pressure, fatigue, dizziness, salt cravings, feeling cold often.
When to seek medical help
➡️ Temperature consistently below 97°F (36.1°C)
➡️ Extreme fatigue or dizziness
➡️ Confusion, shivering, slow breathing
➡️ Suspected thyroid, diabetes, or infection
Do not ignore — proper diagnosis and treatment are important.
Quick Tips to Manage Mild Low Body Temperature
- Eat warm, nutritious foods
- Avoid skipping meals
- Stay hydrated and dress warmly
- Include foods rich in iron, B12, iodine
- Stay physically active to boost metabolism


