Protocol · Circulatory Health
Cold Hypersensitivity (Cold Intolerance) Support Protocol
Ginkgo Biloba and Omega-3 Fatty Acids are the core of this stack, with 7 supporting supplements. Each row gives the amount the protocol lists and the grade our evidence database holds for that supplement in Cold Hypersensitivity (Cold Intolerance) Support.
We are re-verifying the studies cited on protocol pages; only confirmed citations are shown.
The stack
9 supplements · none graded yet
| Grade | Supplement | Amount listed | Why it’s in the stack | Evidence on file | Shop |
|---|---|---|---|---|---|
| Primary stackThe core of this protocol | |||||
| Ginkgo Biloba | Amount listed: 120–240 mg standardized extract daily | Improves peripheral circulation; may help with cold extremities by enhancing blood flow | Not graded yet | ||
| Omega-3 Fatty Acids | Amount listed: 2–3 g EPA+DHA daily | Improves blood viscosity and endothelial function; supports healthy circulation | Not graded yet | ||
| Supporting stackListed as additions to the core | |||||
| Iron | Amount listed: Only if deficient; dose based on ferritin levels | Iron deficiency is a common cause of cold intolerance; supports oxygen delivery to tissues | Not graded yet | ||
| Vitamin B12 | Amount listed: 1,000–2,000 mcg methylcobalamin daily if deficient | Deficiency can cause cold extremities and peripheral neuropathy; supports nerve and blood cell health | Not graded yet | ||
| Magnesium | Amount listed: 300–400 mg daily | Supports blood vessel relaxation and healthy circulation; may help with Raynaud's phenomenon | Not graded yet | ||
| Niacin (Vitamin B3) | Amount listed: 100–500 mg daily (flush form) | Causes vasodilation; may improve blood flow to extremities | Not graded yet | ||
| Cayenne/Capsaicin | Amount listed: 30–120 mg cayenne extract daily or topical capsaicin | Promotes peripheral circulation; traditional use for cold extremities | Not graded yet | ||
| Vitamin E | Amount listed: 400–800 IU daily | Antioxidant that supports blood vessel health; studied for Raynaud's phenomenon | Not graded yet | ||
| L-Arginine | Amount listed: 3–6 g daily in divided doses | Nitric oxide precursor; promotes vasodilation and blood flow | Not graded yet | ||
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How this protocol works
In plain language
Cold hypersensitivity (cold intolerance) means feeling uncomfortably cold when others are comfortable, or having hands and feet that are always cold. While occasional cold hands and feet are normal, persistent cold intolerance can indicate underlying health issues.
COMMON CAUSES of cold intolerance:
- Anemia (especially iron deficiency)
- Hypothyroidism (underactive thyroid)
- Poor circulation (peripheral artery disease, Raynaud's phenomenon)
- B12 deficiency
- Diabetes (affects circulation and nerves)
- Low body weight or muscle mass
- Hormonal changes (especially in women)
WHEN TO SEE A DOCTOR:
- Sudden onset of cold intolerance
- Associated fatigue, weakness, or weight changes
- Skin color changes (white, blue) in fingers or toes
- Numbness or tingling
- Cold intolerance affecting daily life
MEDICAL EVALUATION should include:
- Thyroid function tests (TSH, free T4)
- Complete blood count (anemia)
- Iron studies (ferritin, iron, TIBC)
- Vitamin B12 level
- Blood glucose
Iron* deficiency is one of the most common causes of cold intolerance. Even mild deficiency can affect thermoregulation.
Ginkgo Biloba* improves peripheral circulation and may help with cold extremities.
Omega-3 Fatty Acids* support healthy blood flow and vessel function.
B12* deficiency can cause cold extremities along with fatigue and neurological symptoms.
Niacin* causes vasodilation (flushing) which can improve blood flow to extremities.
Expected timeline: Addressing nutrient deficiencies (iron, B12) typically improves symptoms within 4-8 weeks. Circulatory supplements may take 6-12 weeks to show benefit.