Vitamin D deficiency and feeling cold

Cold sensitivity can be related to a cool environment, low body weight, reduced food intake, poor circulation, anaemia, an underactive thyroid, infection, or medicines. Fatigue and weakness associated with low vitamin D may make cold feel harder to tolerate, but that symptom alone cannot identify the cause.

A clinician may ask whether you feel cold all the time or only in certain settings, and whether you have weight change, pale skin, breathlessness, constipation, dry skin, numbness, fever, or menstrual blood loss. Examination and blood tests can help assess thyroid function, blood count, and vitamin D when appropriate.

Keep warm with suitable layers, regular meals, and safe movement. Track when the cold feeling occurs and record other changes such as tiredness, dizziness, breathlessness, aches, or altered mood. Arrange a primary-care appointment if cold sensitivity is persistent, new, or accompanied by reduced energy or changes in weight.

Do not take high-dose vitamin D simply because you feel cold. If testing confirms deficiency, use the clinician's plan and mention supplements or medicines that could affect treatment. Further information is available on Vitamin D Deficiency and Low Mood.

Seek urgent care for severe breathlessness, chest pain, confusion, fainting, a very low body temperature after cold exposure, blue or grey skin, or rapidly worsening illness. Seek prompt review for cold sensitivity with marked weakness, repeated falls, bleeding, fever, or new numbness.

Could my cold sensitivity relate to thyroid function, anaemia, circulation, nutrition, or another issue? Should vitamin D be tested? Which changes would mean I need urgent help, and when should we review the results?