This store requires javascript to be enabled for some features to work correctly.

  • Free delivery from 35€ purchase

  • 4.6/5 OVER +2500 REVIEWS

  • Our points of sale
  • Science
  • Customers' opinion
The perfumes

my basket

More than 35,00 € to take advantage of free delivery

  • Hydratis insulated bottle

    Hydratis insulated bottle

    19,90 €

    Ajouter au panier
  • Discovery pack

    Discovery pack

    59,50 € 49,50 €

    Ajouter au panier
  • Hydratis tubes

    Hydratis tubes

    9,90 €

    Ajouter au panier
Order - 0,00 €
Quels sont les signes de la déshydratation chez une personne âgée ?

What are the signs of dehydration in an elderly person?

With age, the risk of dehydration increases, and its consequences can be serious. So, how can we identify the signs of dehydration in seniors , and above all, how can we help them stay well hydrated ?

Recognize the signs of dehydration in older adults

Dehydration in older people does not always show itself easily. Here are some signs to watch for:

A feeling of dry or sticky mouth can be an early sign of dehydration. Indeed, this phenomenon occurs when the salivary glands do not produce enough saliva. In addition to the feeling of dryness, a dry mouth may be accompanied by cracked lips, a rough tongue, difficulty chewing, swallowing, or speaking.

Dark urine or reduced urination frequency may be warning signs. The darker the urine, the more it may mean that the body is deprived of water. In fact, dark urine is generally more concentrated . This means there is less water to dilute the waste products the body eliminates, such as urea and creatinine. A high concentration of these wastes gives urine a darker color. In addition to color, urine volume can also be reduced when dehydration occurs. Less water in the body means less urine is produced.

When the body is dehydrated, it lacks water which is necessary to maintain skin hydration. This can make the skin dry, less elastic , and more prone to irritation and cracking . A simple test to perform is that of skin pinching: when the skin is lightly pinched and it does not quickly return to its original shape, this may indicate dehydration. In older people, however, this test may be less reliable due to the skin's natural loss of elasticity with age.

Changes in energy level or mental clarity deserve your attention. When the body is dehydrated, it lacks the water it needs to function effectively. This can lead to an overall drop in energy levels , as the body has to work harder to maintain its vital functions. Water plays an essential role in muscle and joint health. Dehydration can lead to muscle and joint pain, which can increase feelings of fatigue.

Dizziness and headaches can also be signs of dehydration. Indeed, dehydration leads to a reduction in blood volume. This means there is less blood available to circulate through the body, which can lower blood pressure and reduce blood supply to the brain, causing dizziness.

Additionally, water is essential for maintaining electrolyte balance in the body.

Dehydration can then disrupt this balance, particularly sodium and potassium levels, which can affect nerve and muscle function, and cause dizziness .

Common causes of dehydration

Why are seniors more likely to become dehydrated? Several factors come into play:

Seniors feel less thirst , a natural warning signal that decreases with age. The body undergoes natural changes that can affect the perception of thirst. Kidney function tends to decline with age. The kidneys play a crucial role in the body's fluid and electrolyte balance . With reduced kidney function, the ability to concentrate urine and retain water decreases, which can impair the thirst response. Thirst-sensing mechanisms in the brain, particularly in the hypothalamus, may also become less sensitive with age. This means that older adults may not feel thirsty even when their body needs hydration .

Certain treatments and health conditions can increase the risk of dehydration . Chronic medical conditions, such as diabetes and certain types of neurological dysfunctions, can also affect the feeling of thirst. For example, cognitive disorders, such as Alzheimer's disease and other forms of dementia, can disrupt the recognition of thirst or the ability to communicate the need to drink.

Mobility or cognitive problems can make access to water more difficult. These can limit fluid intake, regardless of feeling thirsty. This is especially true for older adults who require assistance with drinking.

Prevention strategies

Prevention is better than cure, especially when it comes to hydration:

- So encourage older people to drink fluids throughout the day , not just when they are thirsty. Other liquids such as soups, herbal teas, and fruit juices may also be included. One effective method is to establish a hydration routine.

- Ensure adequate fluid and electrolyte intake daily. Dehydration can cause a significant loss of electrolytes, and electrolytes, such as sodium, potassium, and chlorine, are essential for many bodily functions. The Hydratis solution makes it possible to provide the body with these lost electrolytes.

- Make sure water is easily accessible. For example, keep a jug of water nearby, use cups or bottles that are easy to hold, and open. Also remember to make sure older adults can easily access the toilet when they increase their fluid intake.

- Educate older adults on the importance of hydration, as well as caregivers. Indeed, it is essential that they can recognize the signs of dehydration so that they act quickly, from the first symptoms.

What to do in case of dehydration?

If you suspect dehydration in a senior, act quickly: Start with small amounts of water or rehydration solutions such as Hydratis.

Avoid alcohol and caffeine, as they can make dehydration worse. Fruits like watermelon, oranges, or grapes, as well as vegetables like cucumbers or celery, can help with hydration.

If symptoms are severe, unable to drink, or vomiting, seek medical attention immediately . Dehydration in older adults may require intravenous hydration or medical treatment.

Keep an eye on developments. Monitor frequency and amount of urine to assess whether hydration is improving.

Understanding and preventing dehydration in older adults is a crucial aspect of their well-being. At Hydratis , we firmly believe in the importance of hydration to maintain optimal health at any age. By being attentive to the signs and adopting good practices, we can all help improve the quality of life of our elders and take care of our loved ones.


Ameli. December 6, 2023. Dehydration -

Ministry of Health and Prevention. (nd). Preventing health risks among the elderly -

Amelis Institute. September 2, 2022. Dehydration in the elderly: risks and prevention advice -

Science Direct. July 2016. “Water-loss (intracellular) dehydration assessed using urinary tests: how well do they work? Diagnostic accuracy in older people. » -

Science Direct. March 2014. “Water-loss dehydration and aging”. -

National information portal for older people. July 17, 2023 - prevention-in-anticipation-of-high-heat

PubMed. September 2001. “Influence of age on thirst and fluid intake” - s%20that%20older,)%20and %20loading%20(hypervolemia)%20of