Heat & Dizziness in Old Age: How to Prevent Falls on Hot Summer Days

High temperatures in late summer pose great challenges for the human organism. Older people in particular react more sensitively to persistent heat. Circulatory problems, dizziness and dehydration can impair safety when walking and increase the risk of falls. If dehydration, dropping blood pressure and uncertainty when walking come together, even a short circulatory weakness can lead to a fall. In this guide, you will learn why heat particularly stresses the body in old age, what early warning signs you should know, and what specific measures you can take to get through hot summer days more safely.

• Older people are often more sensitive to high temperatures.
• The sensation of thirst often decreases with age, making dehydration more likely.
• Heat can cause dizziness, weakness, circulatory problems, and in severe cases, impaired consciousness.
• A sudden drop in blood pressure when standing up can lead to dizziness and temporary loss of vision ("blacking out").
• Regular hydration, adjusting daily routines, and keeping your home as cool as possible help reduce stress.
• Medications should never be stopped or re-dosed independently during hot weather.
• The Gardia emergency call system can provide additional safety in an emergency if an active call for help is no longer possible after a fall.

At high temperatures, the body tries to release excess heat. This includes, among other things, the widening of blood vessels in the skin. At the same time, the body loses fluid through sweating. This can put a greater strain on the circulatory system. Elderly people are particularly at risk because the body's adaptability changes with age, and heat and thirst are sometimes perceived less clearly. Several factors can combine in this process.

• Dehydration

Those who drink too little lose fluid without adequately replacing it. This can lead to dizziness, headaches, concentration problems, or confusion, among other things. Especially in summer, insufficient fluid intake can become problematic for older people.

• Circulatory problems

Heat widens blood vessels, which can cause blood pressure to drop. When getting up quickly, there can also be a short-term drop in blood pressure.

Typical consequences can be:

• dizziness,
• feeling of weakness,
• blurred vision or blacking out,
• unsteadiness when standing,
• in extreme cases, a brief loss of consciousness.

The AOK also names dizziness, nausea, and fainting as possible consequences of circulatory problems in hot weather.

• Less pronounced feeling of thirst

Many older people feel thirst less distinctly, meaning that a lack of fluid in the body may not be noticed until late.

• Medications can play a role

Certain medications may require special attention at high temperatures. These include, for example, medications that affect blood pressure or fluid balance. However, the specific effect depends on the particular preparation and the health situation. Therefore, medications should never be stopped or dosed differently on your own. If in doubt, medical or pharmaceutical advice should be sought.

Even a few seconds of dizziness can be enough to lose your balance.

Situations that are particularly dangerous include:

• getting up quickly from bed or an armchair,
• nighttime trips to the toilet,
• climbing stairs,
• showering or bathing,
• standing for long periods,
• shopping in extreme heat,
• walks in the midday sun,
• gardening.

Dizziness in old age, regardless of heat, is a relevant factor for gait insecurity and an increased risk of falls.

Relatives and elderly people should react early to symptoms to avoid a fall as much as possible.
If there is also severe confusion, impaired consciousness, or other signs of severe overheating, heatstroke may be present. You can read about the typical symptoms and important first aid measures in our article "Recognizing heatstroke: symptoms, first aid & prevention".

1. Stick to a fixed drinking schedule

As you age, don't rely solely on your thirst. For older adults, about 1.5 liters of fluids per day are generally recommended. In hot weather, the need may increase. People with heart or kidney diseases should discuss their individual fluid intake with their doctor.

Tip: In the morning, place water or unsweetened tea where it's visible. This makes it easier to see how much has already been consumed throughout the day.

Also helpful are:

• drinking small amounts regularly,
  
• planning a drink with every meal,
  
• drinking even without a clear feeling of thirst,
  
• taking a bottle with you when out and about.
  

The consumer advice center recommends drinking regularly in hot weather before strong thirst sets in.

2. Ventilate and darken rooms correctly

A home that is as cool as possible relieves the body and can help to reduce circulatory problems.

It makes sense to:

• ventilate early in the morning or late in the evening,
  
• reduce direct sunlight during the day,
  
• close roller blinds, Venetian blinds or curtains,
  
• avoid unnecessary heat sources.
  

It is also recommended for people in need of care to keep living spaces as cool as possible during heatwaves.

3. Adjust daily activities

Walks, shopping or gardening should be moved to the cooler morning or evening hours on particularly hot days if possible. The German Federal Ministry of Health also recommends shifting physical activities to cooler times of the day during heatwaves.

Avoid if possible:

• standing in direct sunlight for long periods,
  
• strenuous gardening at lunchtime,
  
• long walks without shade,
  
• unnecessary physical exertion during the hottest hours.

4. Stand up slowly

Especially after sitting or lying down for a long time, a quick change of position can cause dizziness.

Therefore, proceed step by step:

1. First, sit upright.
   
2. Remain seated for a moment.
   
3. Move your feet and legs.
   
4. Stand up slowly.
   
5. If necessary, hold on to a sturdy piece of furniture.
   

If dizziness or blurred vision occurs, sit or lie down again. In orthostatic hypotension, sitting or lying down often quickly relieves symptoms.

5. Additional emergency safety with the Gardia emergency call system

Should a severe dizzy spell, a fall, or a brief loss of consciousness occur despite all precautions, quick help can be crucial. Especially after a fall, a smartphone may not be within reach. In cases of severe drowsiness or unconsciousness, the affected person may also no longer be able to actively call for help. Here, the Gardia emergency wristband can offer additional security. The Gardia emergency call system combines a central emergency button with automatic, AI-based FallGuard360° fall detection. If the system detects a typical fall event, an emergency chain can be started automatically. This is particularly helpful if the wearer can no longer press the emergency button independently after a fall. The automatic, AI-based FallGuard360° fall detection therefore complements the manual emergency button.

If you suddenly feel dizzy:

1. Stop walking or sit down immediately.
2. Avoid further steps until the dizziness subsides.
3. Find a cool or shady place.
4. Drink small sips, unless there is a medical reason not to.
5. Inform another person if you feel unsure.
6. Only stand up slowly afterward.

If dizziness is new, very severe, or recurrent, the cause should be medically clarified. The same applies especially to additional symptoms such as chest pain, shortness of breath, paralysis, speech disorders, unconsciousness, or severe confusion.

In summer, many older people remain active: shopping, gardening, walking, or on their way to friends and family. At the same time, heat, dehydration, and circulatory problems can occur unexpectedly. If this leads to dizziness or a fall, a personal emergency wristband worn directly on the body is particularly practical.

• Security when an active emergency call is no longer possible

The Gardia emergency wristband features automatic, AI-based FallGuard360° fall detection. If a typical fall event is detected, the emergency chain can be initiated even if the wearer can no longer react themselves.

Usable at home and on the go

The Gardia emergency wristband has an integrated mobile connection.

Therefore, the wearer needs:

• no smartphone,
  
• no stationary base station.
  

The Gardia emergency wristband can thus be used both at home and on the go – for example, while walking, shopping, or in the garden.

• Location transmission in an active emergency

In an active emergency, the location can be transmitted. This allows stored emergency contacts to better identify where help is needed. The Gardia emergency wristband is not intended for permanent location monitoring.

• Direct voice connection

A direct voice connection is possible via the Gardia emergency wristband in an active emergency. Depending on the chosen tariff, up to six private emergency contacts or optionally the professional Bosch 24/7 emergency call center can be integrated into the emergency chain.

• Relief for relatives

Especially during longer heat periods, relatives often worry when parents or grandparents live alone or are out and about. The Gardia emergency wristband can supplement personal precautions because an emergency chain can be started in an emergency, and trusted persons are involved.

Precisely because the sensation of thirst often diminishes with age, fixed routines can be helpful.

Practical examples include:

• a drink with every meal,
  
• a visibly placed carafe,
  
• small sips throughout the day,
  
• various unsweetened beverages,
  
• water-rich foods like cucumbers, tomatoes, or melon,
  
• reminders from relatives.

Medications can also play a role in high temperatures. These include, for example, certain diuretics or medications that affect blood pressure. You can find detailed information on which medications require special attention in the heat, how to store medicines correctly, and which warning signs you should take seriously in our article "Medications in the heat: What you should consider on hot days".

Heat can put a severe strain on the bodies of older people. Reduced thirst, dehydration, and circulatory problems can cause dizziness, thereby increasing the risk of falls. The risk can be reduced with a fixed drinking schedule, the coolest possible apartment, adjusted daily routines, and standing up slowly. However, dizziness and falls cannot be entirely prevented. The Gardia emergency wristband can therefore offer an additional layer of security: with a central emergency call button, automatic, AI-based FallGuard360° fall detection, integrated mobile phone connection, location transmission in an active emergency, and direct voice connection.