Why Am I Always Cold? 9 Possible Reasons You Feel Cold All the Time

Everyone feels cold occasionally. Perhaps the weather has changed, the air conditioning is too strong or you have been sitting still for a long time.

But what if you seem to be cold all the time?

You may be wearing a jumper while everyone else is comfortable. Your hands and feet may constantly feel icy, or you may struggle to warm up even when the room does not seem particularly cold.

This can leave you wondering:

Why am I always cold?

Some people naturally feel colder than others. But persistent or newly developed sensitivity to cold—sometimes called cold intolerance—can also be associated with conditions such as anaemia, an underactive thyroid or circulation problems.

The other symptoms occurring alongside the cold feeling can provide useful clues.

Here are nine possible reasons you may feel cold more often than other people.

1. You May Naturally Feel the Cold More Than Other People

Not everyone experiences temperature in exactly the same way.

Factors such as:

• body composition
• muscle mass
• age
• hormones
• activity level
• individual temperature preference

can influence how warm or cold you feel.

So being the person who reaches for a jumper first does not automatically mean something is wrong.

What deserves more attention is a new or significant change—particularly if you suddenly feel much colder than you used to.

2. Iron-Deficiency Anaemia Could Make You Feel Cold

Anaemia is one of the medical conditions commonly associated with feeling unusually cold.

Red blood cells help carry oxygen around your body. If you have anaemia, your tissues may not receive oxygen as effectively as they should.

Depending on the cause and severity, other symptoms can include:

• persistent tiredness
• weakness
• shortness of breath
• dizziness
• headaches
• heart palpitations
• paler skin than usual

Iron deficiency is one common cause of anaemia, but there are several others.

Do not assume that feeling cold means you need iron supplements. Blood tests can determine whether anaemia or iron deficiency is actually present.

Related reading: Why Am I Still Tired After 8 Hours of Sleep? 10 Possible Reasons

3. An Underactive Thyroid Could Be Responsible

Your thyroid gland produces hormones involved in regulating your metabolism and many other body processes.

When the thyroid does not produce enough thyroid hormone, the condition is called hypothyroidism, or an underactive thyroid.

Cold intolerance is a recognised symptom.

Other possible symptoms include:

• tiredness
• weight gain
• constipation
• difficulty concentrating
• low mood
• dry skin
• dry or thinning hair
• muscle aches
• changes in menstrual periods

These symptoms can develop gradually, making hypothyroidism easy to overlook.

A healthcare professional can use blood tests to assess thyroid function if appropriate.

4. Poor Circulation May Make Your Hands and Feet Feel Cold

If your whole body feels reasonably comfortable but your hands or feet remain cold, circulation may be worth considering.

Your blood carries heat throughout your body.

When blood flow to your extremities is reduced, your fingers and toes may feel particularly cold.

Other symptoms such as pain, numbness, tingling or significant colour changes may provide additional clues.

Persistent circulation problems deserve medical assessment rather than simply being managed with thicker socks and gloves.

5. Raynaud's Phenomenon Can Make Your Fingers and Toes Very Cold

Raynaud's phenomenon affects blood flow, usually in the fingers and toes.

Cold temperatures or stress can trigger narrowing of small blood vessels.

During an episode, your fingers or toes may:

• feel extremely cold
• become numb
• tingle
• hurt
• change colour

They may become noticeably pale or blue before changing colour again as circulation returns.

If this sounds familiar, discuss the symptoms with a healthcare professional.

Feeling cold all over and having cold, colour-changing fingers are different patterns and can point towards different explanations.

6. Losing Significant Weight Can Make You Feel Colder

Body fat provides some insulation, while muscles generate heat.

If you have recently lost a substantial amount of weight, you may notice that you tolerate cold temperatures differently.

This can happen after:

• intentional weight loss
• major dietary changes
• illness
• inadequate calorie intake
• unexplained weight loss

The reason for the weight loss matters.

If you are losing weight without trying, particularly alongside persistent cold intolerance or other unexplained symptoms, seek medical advice.

7. Not Eating Enough Can Affect How Warm You Feel

Your body requires energy from food to maintain normal functions, including producing heat.

If your calorie intake is consistently too low for your body's requirements, feeling unusually cold can be one consequence.

Other possible signs that your nutritional intake may be inadequate include:

• tiredness
• weakness
• difficulty concentrating
• unintended weight loss
• reduced physical performance

This is particularly important if you have recently adopted a very restrictive diet.

Healthy eating should provide adequate energy and nutrients rather than simply minimising calories.

8. Vitamin B12 Deficiency May Sometimes Be Involved

Vitamin B12 plays an important role in producing healthy red blood cells and maintaining the nervous system.

A deficiency can eventually contribute to anaemia.

Possible symptoms can include:

• extreme tiredness
• weakness
• pins and needles
• problems with balance
• memory or concentration difficulties
• a sore or red tongue

Some people do not consume enough vitamin B12, while others cannot absorb it properly.

Feeling cold by itself does not diagnose a B12 deficiency.

If your symptoms suggest a deficiency, appropriate blood tests can help determine whether one is present.

9. Certain Health Conditions or Medicines May Contribute

Cold intolerance has many possible explanations, and sometimes the cause does not fit neatly into the categories above.

Certain medications or health conditions can influence:

• circulation
• metabolism
• blood pressure
• nutritional status
• temperature regulation

This is why persistent cold intolerance should be considered alongside your overall health rather than treated as an isolated symptom.

If your cold sensitivity began after starting a new medication, mention this to your doctor or pharmacist.

Do not stop prescribed medication without professional advice.

Why Are My Hands and Feet Always Cold?

Cold hands and feet do not necessarily mean your entire body temperature is low.

Your body can reduce blood flow to the extremities when trying to conserve heat.

Some people naturally experience colder hands and feet than others.

However, persistent cold extremities can also occur with conditions involving circulation, anaemia or Raynaud's phenomenon.

Pay particular attention to:

• pain
• numbness
• persistent tingling
• sores that heal poorly
• significant colour changes
• one limb suddenly becoming much colder than the other

Those symptoms warrant medical assessment.

Why Am I Cold When Everyone Else Is Warm?

This is one of the more useful ways of recognising cold intolerance.

If everyone else in a comfortably heated room feels fine while you regularly need several additional layers, your sensitivity to cold may genuinely be greater.

Cleveland Clinic specifically advises paying attention when your cold feeling seems disproportionate to the environment or occurs alongside symptoms such as fatigue or weakness.

That does not automatically indicate disease.

But if the pattern is persistent or new, it is reasonable to discuss it with a healthcare professional.

Why Am I Always Cold and Tired?

Feeling cold and tired together makes several possibilities particularly worth considering.

These include:

• anaemia
• iron deficiency
• hypothyroidism
• inadequate nutrition
• vitamin B12 deficiency
• other medical conditions

Fatigue and cold intolerance alone cannot tell you which explanation is responsible.

Blood tests may be useful if the symptoms persist.

Why Am I Cold Even Under a Blanket?

A blanket reduces heat loss but does not actually generate much heat itself.

If your body is not producing or distributing heat effectively, wrapping yourself in more blankets may not completely solve the sensation.

Persistent difficulty warming up—particularly in an otherwise warm environment—is more important than occasionally needing extra bedding during cold weather.

Can Stress Make You Feel Cold?

Stress can produce physical changes in the body, including changes in blood flow.

Some people notice cold hands or feet when they are anxious or stressed.

Stress can also trigger Raynaud's episodes in susceptible people.

But persistent whole-body cold intolerance should not automatically be attributed to stress without considering other explanations.

Does Feeling Cold Mean My Iron Is Low?

Not necessarily.

Iron-deficiency anaemia is one possible cause of cold intolerance, but feeling cold is not enough to diagnose it.

If iron deficiency is suspected, a healthcare professional may arrange blood tests.

Taking iron unnecessarily can cause side effects and may be harmful, so supplements should not be used simply because you feel cold.

What Can I Do If I Always Feel Cold?

The appropriate solution depends on the cause.

Dress in comfortable layers

Several lighter layers can help trap warm air around your body.

Keep physically active

Movement generates heat and can temporarily improve blood flow.

Eat adequately

Make sure your diet provides enough energy and a variety of nutrients.

Pay attention to accompanying symptoms

Cold intolerance becomes more informative when considered alongside symptoms such as tiredness, weight changes, constipation, dizziness or colour changes in your fingers.

Keep track of when it happens

Ask yourself:

• Is my whole body cold or mainly my hands and feet?
• Is this a new problem?
• Am I losing weight?
• Am I unusually tired?
• Have my fingers started changing colour?
• Have I started a new medication?

This information can be useful during a medical assessment.

When Should You See a Doctor About Feeling Cold?

Consider arranging an appointment if:

• you constantly feel cold in environments other people find comfortable
• the problem is new or becoming worse
• you feel cold alongside persistent fatigue
• you have unexplained weight changes
• you have constipation and other possible thyroid symptoms
• your fingers or toes repeatedly change colour
• you experience persistent dizziness or weakness
• your symptoms interfere with everyday life

Seek urgent medical attention if one arm or leg suddenly becomes unusually cold, pale, painful or numb, particularly if the change is severe or sudden, because an acute interruption of blood flow can be an emergency.

Frequently Asked Questions

Is it normal to feel colder than everyone else?

Some people naturally prefer warmer temperatures and feel cold sooner than others.

A persistent or newly developed change in cold tolerance deserves more attention.

What deficiency makes you feel cold?

Iron deficiency that leads to anaemia can contribute to cold intolerance. Vitamin B12 deficiency can also cause anaemia.

However, you cannot determine whether you have a deficiency based on feeling cold alone.

Can an underactive thyroid make you cold?

Yes. Cold intolerance is a recognised symptom of hypothyroidism because thyroid hormones play an important role in metabolism and temperature regulation.

Why are my hands always cold but my body is warm?

Blood flow to your hands can decrease when your body conserves heat.

Persistent cold hands accompanied by numbness, pain or colour changes may indicate a circulation problem such as Raynaud's phenomenon.

Can losing weight make you feel colder?

Yes. Reduced body fat can decrease insulation, and inadequate calorie intake can also affect heat production.

Should I take iron if I always feel cold?

Not unless iron deficiency has been appropriately identified or a healthcare professional has advised you to take it.

Feeling cold has many possible causes.

What tests might a doctor do if I'm always cold?

The tests depend on your symptoms and medical history. A healthcare professional may consider blood tests to investigate possibilities such as anaemia, iron deficiency, vitamin B12 deficiency or thyroid problems.

The Bottom Line

If you're asking “Why am I always cold?”, it does not necessarily mean something is wrong.

Some people naturally feel colder than others.

But persistent cold intolerance can sometimes be associated with iron-deficiency anaemia, an underactive thyroid, circulation problems, Raynaud's phenomenon, significant weight loss or inadequate nutrition.

Pay particular attention when feeling cold is new or occurs alongside other symptoms such as persistent tiredness, weakness, dizziness, unexplained weight changes or significant colour changes in your fingers and toes.

Rather than guessing which vitamin or supplement you need, persistent cold intolerance is better investigated based on your symptoms and, where appropriate, medical tests.

Related Reading

• Why Am I Still Tired After 8 Hours of Sleep? 10 Possible Reasons
• Why Do I Feel Dizzy When I Stand Up? 8 Possible Causes and When to Worry
• Why Do I Bruise So Easily? 9 Possible Causes and When to Worry

Sources and Further Reading

• Cleveland Clinic — Why Am I Always Cold?
• MedlinePlus — Cold Intolerance
• NHS — Underactive Thyroid (Hypothyroidism)
• NHS — Iron Deficiency Anaemia
• NHS — Raynaud's

Medical Disclaimer

This article is for general educational and informational purposes only and is not a substitute for professional medical advice, diagnosis or treatment. If you experience persistent or unexplained cold intolerance or other concerning symptoms, consult an appropriately qualified healthcare professional.