Feeling cold isn’t one of the classic early warning signs of diabetes, but it can absolutely be connected to the disease. Cold hands and feet, in particular, are a common complaint among people living with diabetes, and several complications of the condition explain why. The link usually isn’t about diabetes itself but about what prolonged high blood sugar does to your nerves, blood vessels, and kidneys over time.
Why Diabetes Can Make You Feel Cold
There are three main ways diabetes leads to feeling cold, and they can overlap in the same person.
Nerve damage (diabetic neuropathy). This is the most direct connection. High blood sugar damages nerves over time, interfering with their ability to send signals. The most common form, peripheral neuropathy, affects the feet and legs first, then the hands and arms. It may affect up to half of all people with diabetes. Damaged nerves can distort temperature signals, making your feet feel persistently cold even when they’re actually a normal temperature. Some people lose the ability to sense temperature changes altogether, while others develop abnormal cold sensations.
Poor circulation. People with diabetes are significantly more likely to develop peripheral artery disease, a condition where fatty deposits narrow the arteries that supply blood to the legs and feet. Less blood flow means less warmth reaching your extremities. One telltale sign is when one foot feels noticeably colder than the other. Foot wounds that heal slowly are another red flag for reduced circulation.
Anemia from kidney disease. Diabetes can gradually damage the kidneys, a complication called diabetic nephropathy. One consequence is that the kidneys produce fewer of the signals your body needs to make red blood cells, leading to anemia. With fewer red blood cells carrying oxygen through your body, you feel cold more easily, and this isn’t limited to your hands and feet. It’s a whole-body chill.
Low Blood Sugar Can Cause Sudden Chills
There’s a separate, more immediate way diabetes connects to feeling cold. When blood sugar drops too low (hypoglycemia), the body triggers a stress response that includes shaking, trembling, sweating, and chills. This is different from the chronic coldness caused by nerve or circulation problems. It comes on quickly, often within minutes, and typically arrives alongside other symptoms like weakness and shakiness. If you’re already diagnosed with diabetes and experience sudden chills paired with trembling or sweating, low blood sugar is worth checking right away with a glucose meter.
Cold Feet vs. Cold Sensation
It helps to understand the difference between feet that are actually cold to the touch and feet that just feel cold. With poor circulation, your feet genuinely lose heat because less warm blood is reaching them. Someone else touching your foot would notice the temperature difference. With nerve damage, your feet might feel cold to you while being perfectly warm. The nerves are sending faulty signals.
Both situations point to diabetes complications, but they involve different problems and your doctor would approach them differently. In many cases, people have both nerve damage and circulation issues at the same time, which compounds the sensation.
When Cold Extremities Point to Something Else
Plenty of conditions unrelated to diabetes cause cold hands and feet. Thyroid problems (particularly an underactive thyroid), Raynaud’s phenomenon, iron-deficiency anemia, and simply being in a cold environment are all common causes. Poor circulation from smoking or inactivity can also be responsible. Feeling cold alone, without other diabetes symptoms like increased thirst, frequent urination, unexplained weight loss, or fatigue, is unlikely to mean diabetes on its own. It becomes more significant when it appears alongside those other signs or in someone who already has a diabetes diagnosis.
Warming Cold Feet Safely With Diabetes
If you have diabetes and your feet are often cold, how you warm them matters more than you might expect. Nerve damage can reduce your ability to feel heat, which creates a real burn risk. You might not notice that a heating pad is too hot or that bath water is scalding until damage is already done.
Heating pads and foot spas are generally discouraged for people with diabetes. Foot spas carry additional infection risks from bacteria, and the jets can irritate sensitive skin. Instead, warm socks, gentle foot exercises (like wiggling your toes or rotating your ankles), and keeping your overall body warm are safer approaches. Elevating your feet when sitting can help blood flow reach them more effectively. Supportive shoes and diabetic-specific socks add insulation without constricting circulation, and barrier repair creams help keep skin from cracking in cold, dry conditions.
If you do soak your feet, keep the water between 92°F and 100°F, check it with a thermometer rather than relying on feel, and limit soaking to 10 to 20 minutes. Always test the water with your hand or elbow first, since those areas typically retain better sensation than feet affected by neuropathy.
How Doctors Test for Temperature-Related Nerve Damage
Damage to the small nerve fibers responsible for sensing temperature is thought to occur early in diabetic neuropathy, sometimes before other nerve problems become obvious. Doctors can assess this through quantitative sensory testing, which measures your ability to detect cold, warmth, vibration, and pain at specific thresholds. The test is noninvasive: a device applies controlled temperature changes to your skin, and you report when you feel them. The sensitivity of cold-detection testing ranges from 27% to 98% depending on the severity of the neuropathy, meaning it catches more cases as nerve damage progresses.
Routine diabetes checkups typically include a basic foot exam where your doctor checks sensation, pulses, and skin condition. If you’ve noticed that your feet feel persistently cold or that you can’t tell the difference between warm and cool water, mentioning it during that visit gives your doctor specific information to work with.