1 / 8Some people naturally tend to feel colder than others without any discernible cause. However, cold intolerance can also indicate an underlying medical condition.2 / 8We first feel the cold on the skin. Sometimes the fingers become numb. The rise and fall of temperature is felt for the first time on our skin. Thermo-receptors just below our skin send cold messages to the brain in the form of nerve waves.3 / 8Cold intolerance is a common symptom of hypothyroidism.Hypothyroidism occurs when the thyroid gland does not produce enough thyroid hormones. These hormones help regulate metabolism and temperature.When the thyroid is not producing enough thyroid hormones, the body’s processes tend to slow down.4 / 8Raynaud’s phenomenon causes blood vessels to narrow when a person experiences cold or stress. This decreases blood flow and may cause affected areas to feel cold.It commonly affects the arteries in the fingers and toes. Some people may also experience symptoms of Raynaud’s in their lips, ears, and nipples.During episodes, the affected areas can turn pale. As blood flow returns, the fingers and toes can feel numb or painful.5 / 8Nutritional deficiency can also cause anemia. People who are deficient in vitamin B-12 and folic acid are also prone to cold sores.6 / 8When the blood circulation in the body is affected, the body starts to cool down. People with poor circulation may feel more cold. In such a condition, the arteries become narrowed, which reduces the blood supply to your organs and you more than other people7 / 8Dehydration can make you feel more cold. In fact, lack of water in the body affects circulation, can cause weakness and can make you feel more cold.8 / 8If you are underweight for your height, lack of proper sleep can also be the cause of chills. Even if you are dehydrated, you may feel very cold. Even if the body is deficient in vitamin B, cold is felt more.