Feeling cold all the time, also known as cold intolerance, can be caused by several underlying factors or health conditions. Common reasons include anemia (low red blood cells reducing oxygen delivery and heat), hypothyroidism (low thyroid hormone levels slowing metabolism), poor circulation, low body weight or muscle mass, dehydration, Raynaud's phenomenon (abnormal blood vessel narrowing), and certain vitamin deficiencies such as B12 deficiency. Other possible causes include diabetes, peripheral artery disease, or medication side effects. It is important to consult a healthcare provider to diagnose and treat any underlying issues if persistent coldness is experienced despite taking measures to stay warm.
Common Medical Causes
- Anemia: Causes reduced oxygen delivery leading to feeling cold, fatigue, pale skin, and dizziness.
- Hypothyroidism: Underactive thyroid slows metabolism and lowers body temperature.
- Poor Circulation: Restricts warm blood flow to extremities (fingers, toes), causing coldness.
- Raynaud’s Phenomenon: Extreme narrowing of blood vessels in response to cold or stress.
Other Contributing Factors
- Low Body Weight: Less fat and muscle reduce insulation and heat production.
- Dehydration: Water helps regulate body temperature; lack of hydration increases cold sensitivity.
- Vitamin Deficiencies: Lack of B12 or folate can contribute to cold feelings.
- Diabetes and Peripheral Artery Disease: Can impair blood flow and nerve function leading to cold sensations.
If always feeling cold interferes with daily life, a doctor can perform blood tests and physical exams to identify the cause and recommend treatment or lifestyle changes accordingly.
