Your feet can reveal a lot about your health — especially when it comes to blood sugar levels. Diabetes often develops slowly, and many early warning signs appear in the feet long before a diagnosis is made.
Because nerves and blood vessels in the feet are very sensitive, any change in blood sugar can trigger noticeable symptoms.
Here are 12 foot-related signs that may indicate high blood sugar or early diabetes.
1. Tingling or “Pins and Needles”
High blood sugar can damage nerves, especially in the feet.
If you often feel tingling, buzzing, or light electrical sensations, it may be a sign of diabetic neuropathy.
2. Numbness
Losing feeling in your feet or toes is one of the most common early symptoms of nerve damage caused by elevated blood sugar.
3. Burning Sensation
A hot, burning feeling in the feet — especially at night — is a strong indicator of nerve stress related to diabetes.
4. Cold Feet
Poor circulation caused by high blood sugar can make your feet unusually cold, even if the rest of your body feels warm.
5. Sharp or Stabbing Pain
Sudden, unexplained foot pain may be caused by irritated or damaged nerves.
6. Slow-Healing Cuts
High blood sugar affects blood flow and slows down the healing process.
If small cuts or blisters take a long time to heal, it may be a warning sign.
7. Dry, cracked skin
Diabetes can affect sweat glands, causing severely dry, flaky, or cracked skin on the feet.
8. Foot Swelling
Poor circulation and fluid retention — both linked to diabetes — can cause swelling in the feet and ankles.
9. Frequent Foot Cramps
Low circulation or nerve dysfunction due to high blood sugar can trigger cramps, especially at night.
10. Darkened Skin Around the Ankles
A condition called acanthosis nigricans, often linked to insulin resistance, can cause the skin to darken or thicken.
11. Changes in Nail Color
Yellowish or brittle toenails can indicate fungal infections, which are more common in people with elevated blood sugar.
12. Loss of Hair on Feet and Toes
Reduced blood flow can cause hair loss on the lower legs, feet, and toes — often an early circulation warning.
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