If you are like most people, you feel cold every now and then during the winter. What you may not know is that just being really cold can make you very sick.

Older adults can lose body heat fast—faster than when they were young. Changes in your body that come with aging can make it harder for you to be aware of getting cold. A big chill can turn into a dangerous problem before an older person even knows what's happening. Doctors call this serious problem hypothermia.

Hypothermia is what happens when your body temperature gets very low. For an older person, a body temperature of 95°F or lower can cause many health problems, such as a heart attack, kidney problems, liver damage, or worse.

Being outside in the cold, or even being in a very cold house, can lead to hypothermia. Try to stay away from cold places, and pay attention to how cold it is where you are. You can take steps to lower your chance of getting hypothermia.

Some illnesses may make it harder for your body to stay warm.

• Thyroid problems can make it hard to maintain a normal body temperature.
• Diabetes can keep blood from flowing normally to provide warmth.
• Parkinson's disease and arthritis can make it hard to put on more clothes, use a blanket, or get out of the cold.
• Memory loss can cause a person to go outside without the right clothing.

Talk with your doctor about your health problems and how to prevent hypothermia.

Taking some medicines and not being active also can affect body heat. These include medicines you get from your doctor and those you buy over-the-counter, such as some cold medicines. Ask your doctor if the medicines you take may affect body heat. Always talk with your doctor before you stop taking any medication.

Here are some topics to talk about with your doctor to stay safe in cold weather:

• Ask your doctor about signs of hypothermia.
• Talk to your doctor about any health problems and medicines that can make hypothermia a special problem for you. Your doctor can help you find ways to prevent hypothermia.
• Ask about safe ways to stay active even when it's cold outside.

Sometimes it is hard to tell if a person has hypothermia. Look for clues. Is the house very cold? Is the person not dressed for cold weather? Is the person speaking slower than normal and having trouble keeping his or her balance?

Watch for the signs of hypothermia in yourself, too. You might become confused if your body temperature gets very low. Talk to your family and friends about the warning signs so they can look out for you.

Early signs of hypothermia:

• Cold feet and hands
• Puffy or swollen face
• Pale skin
• Shivering (in some cases the person with hypothermia does not shiver)
• Slower than normal speech or slurring words
• Acting sleepy
• Being angry or confused

Later signs of hypothermia:

• Moving slowly, trouble walking, or being clumsy
• Stiff and jerky arm or leg movements
• Slow heartbeat
• Slow, shallow breathing
• Blacking out or losing consciousness

Call 9-1-1 right away if you think someone has warning signs of hypothermia.

What to do after you call 9-1-1:

• Try to move the person to a warmer place.
• Wrap the person in a warm blanket, towels, or coats—whatever is handy. Even your own body warmth will help. Lie close, but be gentle.
• Give the person something warm to drink, but avoid drinks with alcohol or caffeine, such as regular coffee.
• Do not rub the person's legs or arms.
• Do not try to warm the person in a bath.
• Do not use a heating pad.

The only way to tell for sure that someone has hypothermia is to use a special thermometer that can read very low body temperatures. Most hospitals have these thermometers. In the emergency room, doctors will warm the person's body from inside out. For example, they may give the person warm fluids directly by using an IV. Recovery depends on how long the person was exposed to the cold and his or her general health.

The only way to tell for sure that someone has hypothermia is to use a special thermometer that can read very low body temperatures. Most hospitals have these thermometers. In the emergency room, doctors will warm the person's body from inside out. For example, they may give the person warm fluids directly by using an IV. Recovery depends on how long the person was exposed to the cold and his or her general health.

Living in a cold house, apartment, or other building can cause hypothermia. In fact, hypothermia can happen to someone in a nursing home or group facility if the rooms are not kept warm enough. If someone you know is in a group facility, pay attention to the inside temperature and to whether that person is dressed warmly enough.

People who are sick may have special problems keeping warm. Do not let it get too cold inside and dress warmly. Even if you keep your temperature between 60°F and 65°F, your home or apartment may not be warm enough to keep you safe. This is a special problem if you live alone because there is no one else to feel the chilliness of the house or notice if you are having symptoms of hypothermia.

Here are some tips for keeping warm while you're inside:

• Set your heat to at least 68–70°F. To save on heating bills, close off rooms you are not using. Close the vents and shut the doors in these rooms, and keep the basement door closed. Place a rolled towel in front of all doors to keep out drafts.
• Make sure your house isn't losing heat through windows. Keep your blinds and curtains closed. If you have gaps around the windows, try using weather stripping or caulk to keep the cold air out.
• Dress warmly on cold days even if you are staying in the house. Throw a blanket over your legs. Wear socks and slippers.
• When you go to sleep, wear long underwear under your pajamas, and use extra covers. Wear a cap or hat.
• Make sure you eat enough food to keep up your weight. If you don't eat well, you might have less fat under your skin. Body fat helps you to stay warm.
• Drink alcohol moderately, if at all. Alcoholic drinks can make you lose body heat.
• Ask family or friends to check on you during cold weather. If a power outage leaves you without heat, try to stay with a relative or friend.

You may be tempted to warm your room with a space heater. But, some space heaters are fire hazards, and others can cause carbon monoxide poisoning. The Consumer Product Safety Commission has information on the use of space heaters. Read the following for more information: Reducing Fire Hazards for Portable Electric Heaters and Seven Highly Effective Portable Heater Safety Habits.

A heavy wind can quickly lower your body temperature. Check the weather forecast for windy and cold days. On those days, try to stay inside or in a warm place. If you have to go out, wear warm clothes, and don't stay out in the cold and wind for a long time.

Here are some other tips:

• Dress for the weather if you have to go out on chilly, cold, or damp days.
• Wear loose layers of clothing. The air between the layers helps to keep you warm.
• Put on a hat and scarf. You lose a lot of body heat when your head and neck are uncovered.
• Wear a waterproof coat or jacket if it's snowy.
• Change your clothes right away if they get damp or wet.

If you are having a hard time paying your heating bills, there are some resources that might help. Contact the National Energy Assistance Referral service at 1-866-674-6327 (TTY 1-866-367-6228) or email the National Energy Assistance Referral (NEAR) project to get information about the Low Income Home Energy Assistance Program.

If your home doesn't have enough insulation, contact your state or local energy agency or the local power or gas company. They may be able to give you information about weatherizing your home. This can help keep heating bills down. These agencies and companies may also have special programs for people who have a limited income and qualify for help paying the heating bill. Your local Area Agency on Aging, senior center, or social service agency may have information on these programs.

Older adults are more sensitive to cold (and heat) than younger adults. Body temperature below 95°F, or hypothermia, increases their risk of heart disease and kidney or liver damage, especially if they have a history of low body temperature or have had hypothermia in the past.

What is Hypothermia?

How to Tell If Someone Has Hypothermia and What to Do

• Early signs include cold feet or hands, swollen face, slower-than-normal speech, and feeling sleepy, angry, or confused. The person’s skin may become pale, and they may begin shivering.
• Later signs include jerking movements that the person can’t control in their arms and legs, slow heartbeat, slow, shallow breathing, and going in and out of consciousness.
• If you see someone showing signs of hypothermia, call 911. While waiting for 911:
  • Move the person to a warmer place.
  • Wrap them in warm, dry clothes,
  • If necessary, remove all clothing and make skin-to-skin contact with the person to transfer body heat. Wrap yourself and the person in dry blankets to stay warm.
  • Give them something warm to drink (no alcohol or caffeine).

Learn more about hypothermia and frostbite prevention and steps to take when you recognize someone else has hypothermia.

How to Help Someone With Dementia Avoid Hypothermia

About 1 in 4 people who have dementia live alone. People with dementia may not be aware of their surroundings. Learn how to make a home safe for someone with dementia, and use these tips to help someone with dementia stay safe during very cold weather.

• Remove portable space heaters and don’t leave the person alone with an open fireplace. Use safety knobs and use a stove with automatic shutoff settings.
• Advise the person to carefully use electric blankets and sheets or heating pads; explain they can cause burns.
• Put red tape around vents, radiators, and other heating components to remind the person to avoid touching them.
• Keep the water heater set to 120°F to prevent burns. Consider installing faucets that mix hot and cold water.
• Leave an extra house key outside the home in case a caregiver or emergency responder needs to get inside.

How to Avoid Hypothermia at Home When It’s Very Cold Outside

You can get hypothermia while indoors if outside cold weather persists or when you are working in cold environments, such as a storage freezer. Use the steps below to prevent hypothermia while indoors.

• Eat a healthy diet every day to make sure your body has enough energy to keep you warm.
• Make sure to stay hydrated
• Limit your alcohol intake.

• Wear warm, thick clothing, including a hat and scarf if needed. Try to keep a blanket nearby.
• If you live alone, ask friends and family to check on you.
• Check your thermostat or an easy-to-read indoor thermometer often. If you don’t have an easy-to-read thermometer, try to have one installed if possible.
  • Keep the house around 68°F to 70°F.
    • Maintain your heating and air conditioning system.
    • Block off any unused rooms and drafts from windows and doors.
    • If you use a fireplace or wood stove as your main heating source, have your chimney or flue inspected every year.
    • If your home doesn’t hold heat well, have the insulation checked.

  Financial help is sometimes available for people who can’t afford to weatherize their home or pay their heating bills.

  For financial help getting your windows, doors, and furnace checked to make sure they are cold-weather-ready, or for other weather-related changes to your home, contact your local Weatherization Assistance Program.

  For help with your energy bills, contact:

  • National Energy Assistance Referral (1-866-674-6327 (toll-free; TTY, 1-866-367-6228)
  • Low Income Home Energy Assistance Program. You can email them at energyassistance@ncat.org

How to Avoid Hypothermia If You Go Outside During Cold Weather

• Wear warm, thick clothing, including a hat, scarf, and gloves, as well as loose layers to increase the amount of body heat.
• Change your clothes as soon as you get inside. Wearing wet clothes causes your body temperature to drop. Dry clothes allow your body to warm itself.

• If you drive somewhere, be prepared in case you get stranded.
  • Keep warm blankets and clothing in your car.
  • Keep food and water in your car.
  • Keep a phone charger in your car.
  • Take any necessary medicines with you.

Create a winter emergency supply kit to keep in your car

How to Avoid Falling If You Go Outside in Icy Weather

During the winter months, it’s important to make sure that surfaces are dry and safe for walking to reduce the risk of falling. These tips can you help prevent falls in icy and snowy weather:

• Make sure there is enough lighting outdoors, especially near walkways and stairs. Low lighting is a major cause of falls. Motion-sensor lights might be useful.
• Keep outside walkways and steps clear of snow, ice, and any objects
• If your home’s main entrance is often icy during the winter months, use a different entrance if you can.
• Make sure your steps are sturdy and have textured grip to reduce falls if the weather is icy or wet.
• If you use walking aids such as a cane, walker, or a wheelchair, dry the wheels or tips of each before entering your home.
• Keep a small table or shelf near the entry door to put items while unlocking the door. This reduces distractions and dangers of slipping or tripping while trying to enter your home.

How You Can Help an Older Adult Avoid Hypothermia

As a friend, family member, or caregiver to an older adult during the winter months, you can:

• Consider having a remote indoor air temperature sensor or monitor installed.
• Have the name and contact information of a nearby family member or friend who can regularly check in on them.
• Create a care plan with them to provide structure for both of you. The care plan should include ways to maintain a healthy body temperature and note if any medicines they take affect their ability to regulate body temperature.
• If you are checking in on an older adult, try to check in on them in person or by telephone as often as possible or at agreed times to make sure they:
  • Are staying hydrated.
  • Have the living space set to a comfortable temperature.
  • Are keeping warm.
  • Don’t show signs of hypothermia.