It's normal to feel a little colder than usual during the winter months or when the air conditioner is blasting. However, if you often find yourself feeling chilly even on the hottest summer day in July, frequently wearing extra layers, or your hands and feet constantly feel like icicles, then something may be off.
According to multiple experts, including Sami Karjalainen of the VTT Technical Research Centre in Finland, "females are more sensitive than males to a deviation from an optimal temperature."
Women's bodies produce less heat than men's, in fact, female bodies are three to 10 percent cooler. This is mainly because men burn more calories and their bodies "contain much more heat-generating muscle," according to realclearscience.com.
While this is a valid biological explanation, there are several other reasons why you feel perpetually cold, including your underlying medical conditions, sleep, diet and exercise habits.
So without further ado, here are 10 possible reasons why you always feel cold:
1. You have poor circulation
Poor circulation means there's a shortage of red blood cells in your body. These cells are responsible for carrying oxygen throughout the body, so when there isn't enough of them, major organs, like the brain, have first dibs on the oxygen, leaving your hands and feet with very small amounts. This is why sometimes your extremities feel frozen while the rest of the your body feels slightly warmer.
2. You have an iron deficiency
Iron improves circulation by helping the red blood cells move oxygen throughout the body, so when your body isn't getting enough of this mineral, it could contribute to a number of conditions, including feeling constantly cold and hyperthyroidism.
3. You have a thyroid problem
The American Thyroid Association (ATA) estimates that one in eight American women will develop a thyroid disorder during their lifetime, and approximately 60% of people with the condition are unaware of it. Hypothyroidism, which occurs when your thyroid isn't secreting enough hormones, causes your metabolism to slow down and your body to lose the ability to warm itself. So it's really important to get your thyroid checked to ensure it's working properly.