Can Dehydration Cause Hair Loss? - eMediHealth (2024)

Adequate water intake, often overlooked in the hectic lives of many people, is a must for maintaining the health of all bodily systems and optimal functioning (1).

People often talk about how not drinking enough water or being dehydrated harms the skin or nails, but what is also important to note is that neglecting water intake also impacts the hair.

Dehydration is intricately linked to hair health. Although there is not enough evidence or research that directly connects dehydration to hair loss, inadequate water consumption may cause hair to turn frizzy, dry, and prone to split ends, hindering growth and inviting hair breakage, according to experts.

Thus, understanding the significance of staying hydrated for maintaining healthy hair is paramount.

To know and learn more about the connection between dehydration and hair loss, continue reading.

How Is Dehydration Related to Hair Loss?

Hair health relies on proper hydration. Nestled within the scalp, the hair roots, like any other cell, need adequate nutrition, with water being a fundamental element.

Water regulates circulation to the scalp and lubricates hair follicles, stimulating growth. The minerals essential for hair nutrition are sourced from water too.

So, no doubt, dehydration can plant the seed for future hair loss, and it does so in the following ways.

Causes split ends to form

Dehydration wreaks havoc on hair by causing split ends. When your locks lack enough moisture, they become dry and brittle, leading to the splitting of the hair strands.

Imagine your hair as a plant. Without adequate water, it withers and loses vitality. Similarly, hair without proper hydration loses its resilience, resulting in fraying that can cause hair loss.

Hinders the availability of water-soluble vitamins

Water is key for absorbing water-soluble vitamins that are crucial for healthy hair.

Biotin is a water-soluble vitamin that is essential for hair health. Its absorption depends on adequate water intake, which is why dehydration can hinder its effectiveness, potentially leading to hair loss.

Niacin, another key vitamin, improves scalp blood circulation. Proper hydration ensures its efficient transport to the hair follicles to support their health.

Additionally, hydration aids the transportation of folic acid, a water-soluble vitamin vital for preventing hair loss.

In essence, staying hydrated ensures these nutrients reach your hair, promoting its overall well-being. (2)

Hinders blood supply to the scalp

Insufficient hydration acts as a roadblock to the nourishing blood supply to the hair follicles, impeding the blood’s capacity to foster robust hair growth.

Dehydration, the culprit behind this, therefore becomes a possible causative agent of hair loss.

When your body lacks the adequate water it needs, the hair follicles may receive a diminished supply of essential nutrients, stunting their potential for growing healthy and strong strands (3).

Causes hormonal imbalances

Your body relies on proper hydration for various functions, and when it lacks adequate water, hormonal imbalances may occur.

This imbalance can disrupt the normal progression of hair growth, leading to shedding and potential thinning. (4)

How Much Water Should You Drink?

While the Centers for Disease Control and Prevention (CDC) lacks specific water intake guidelines, adults are advised to aim for 2-3 liters daily.

However, tailoring water intake to the level of activity is also crucial. For example, marathon runners require more water than normal folks. Also, in elderly individuals, excess water intake may lead to hyponatremia, so they should be careful about the amount of water they drink daily. (5)

How Can You Make Sure You’re Hydrated?

Ensuring adequate hydration is key for vibrant hair. Beyond drinking enough amount of water, you should also embrace alternative sources such as coconut water, yogurt, and water-rich fruits and veggies.

To make sure you don’t forget to drink adequate water, set alarms that remind you to sip water every few minutes. Also, try to keep a water bottle right next to you while you work or study.

If you’re working out or playing sports, you may need to increase your water intake.

What are some hair-related signs that tell me I’m dehydrated?

If you experience these hair symptoms, you might be suffering from dehydration:

Final Word

Dehydration affects the hair, making it dry and prone to split ends, though it is not directly linked to hair loss. Insufficient water intake hampers nutrient absorption, causing hair issues.

Adults should aim for an intake of 2-3 liters of water daily, adjusting for activity. Stay hydrated by setting reminders and consuming water-rich foods and alternative sources such as coconut water.