Survey on Heatstroke Prevention and Hydration: Over Half Have Felt 'Maybe It's Heatstroke', About 80% of Them Strengthened Countermeasures

Kracie Co., Ltd. (Foods Company) conducted a 'Survey on Heatstroke Prevention and Hydration' to understand the actual state of heatstroke countermeasures and awareness of hydration among consumers, against the backdrop of increasingly severe summer heat. In recent years, due to rising accidents and health risks caused by extreme heat, the revision of the Industrial Safety and Health Regulations in 2025 strengthened employers' duty of care, highlighting the growing importance of countermeasures across society. *1

This survey clarified the actual state of conscious hydration in daily life and what countermeasures consumers are aware of for heatstroke prevention.

*1 Ministry of Health, Labour and Welfare URL: https://www.mhlw.go.jp/seisakunitsuite/bunya/kenkou_iryou/kenkou/nettyuu/nettyuu_taisaku/

[Survey Summary]

1. Over half have felt 'maybe it's heatstroke', and about 80% of them strengthened countermeasures.

2. The most common place for feeling heatstroke was 'during outdoor activities' at 68.2%, with 28.0% experiencing it 'indoors'.

3. While 72.0% implement 'frequent hydration' as a heatstroke countermeasure, 42.5% consume 'less than 1L' on extremely hot days.

4. For family heatstroke countermeasures, 'encouraging hydration' was 59.5%, while 28.0% have no countermeasures.

5. Key factors for heatstroke countermeasures are 'ease' and 'sustainability'.

6. Key factors for heatstroke prevention beverages are 'price', 'taste', and 'ingredients'.

[Survey Overview]

Survey Target: Men and women aged 15 and over (100 men, 100 women)

Survey Period: April 20, 2026

Survey Method: Internet survey

Survey Agency: Survey conducted using Cross Marketing QiQUMO

[Survey Results]

1. Over half have felt 'maybe it's heatstroke', and about 80% of them strengthened countermeasures.

When asked if they had ever felt like they might have heatstroke, 53.5% answered 'yes', exceeding half, revealing that many people feel the risk of heatstroke is close to them.

Furthermore, when those who experienced heatstroke were asked if they strengthened their countermeasures afterward, 82.3% answered 'strengthened countermeasures' (total of 18.7% 'significantly strengthened' and 63.6% 'somewhat strengthened').

This result suggests that heatstroke is recognized as a familiar risk, and actual experience leads to strengthened countermeasure behavior.

2. The most common place for feeling heatstroke was 'during outdoor activities' at 68.2%, with 28.0% experiencing it 'indoors'.

When those who experienced heatstroke were asked about the situation, 'during outdoor activities' was the most common at 68.2%. This was followed by 'when indoors' at 28.0%, 'during sports/exercise' at 21.5%, 'during commuting' at 20.6%, and 'while sleeping' at 6.5%.

While heatstroke is often perceived as occurring outdoors, it was revealed that nearly 30% experience it 'indoors'.

3. While 72.0% implement 'frequent hydration' as a heatstroke countermeasure, 42.5% consume 'less than 1L' on extremely hot days.

When asked about heatstroke countermeasures implemented in summer, 'frequent hydration' was the most common at 72.0%, indicating that many people are conscious of hydration as a countermeasure. This was followed by 'using parasols or hats' (42.5%), 'salt intake' (37.5%), and 'room temperature management' (29.5%).

On the other hand, regarding the amount of water consumed on extremely hot days, 42.5% answered 'less than 1L' (combined 9.0% for 'less than 500mL' and 33.5% for '500mL to less than 1L').

While many people are conscious of 'hydration' as a heatstroke countermeasure, the actual water intake is insufficient. Notably, among women, '500mL to less than 1L' was the most common at 39.0%, showing a tendency to consume less water than men.

4. For family heatstroke countermeasures, 'encouraging hydration' was the most common at 59.5%, while 28.0% have no countermeasures.

When asked about heatstroke countermeasures implemented for family members, 'encouraging hydration' was the most common at 59.5%, followed by 'managing room temperature' (30.0%) and 'encouraging keeping beverages on hand' (28.0%). On the other hand, 28.0% answered 'doing nothing in particular', suggesting that even with growing interest in heatstroke, specific countermeasures for family members are not sufficiently implemented in some cases.

5. Key factors for heatstroke countermeasures are 'ease' and 'sustainability'.

When asked what is important for heatstroke countermeasures, 'being easy to do' was the most common at 47.0%, followed by 'being sustainable daily' (45.0%), 'gaining correct knowledge' (43.5%), and 'feeling the effect' (37.0%). This result shows a trend towards valuing countermeasures that can be continued without strain and are easy to incorporate into daily life.

6. Key factors for heatstroke prevention beverages are 'price', 'taste', and 'ingredients'.

When asked about important factors when choosing heatstroke prevention beverages, 'price' was the most common at 46.0%, followed by 'taste' (39.5%), 'ingredients (electrolytes, etc.)' (37.0%), 'volume' (31.0%), and 'availability' (31.0%).

By gender, women tended to value 'taste' (44.0%) and 'availability' (36.0%), while men showed a relatively higher percentage valuing 'volume' (35.0%).

Additionally, 21.5% answered 'being able to drink without getting tired of it', indicating that heatstroke prevention beverages are expected to have not only functionality but also 'drinkability' and 'ease of choice' for daily continuation.

This survey revealed that over half have felt like they might have heatstroke, and that even when conscious of hydration, the amount of water intake is insufficient. While awareness of heatstroke countermeasures is high, a certain number of people do not consume enough water on extremely hot days, highlighting the difficulty of continuous hydration. The survey also showed a trend towards valuing 'ease' and 'sustainability' in heatstroke countermeasures, and a demand for beverages that can be easily incorporated into daily life.

Kracie offers a powdered sports drink 'Sky Water'.

'Sky Water', a hypotonic beverage suitable for daily hydration.

'Sky Water' is a powdered sports drink containing electrolytes such as salt. With an osmotic pressure lower than body fluids (hypotonic), it allows for quick water replenishment. In addition to its mildly sweet and easy-to-drink taste, its features include the lightness and ease of storage characteristic of powder, and the convenience of being able to make only the needed amount. One small packet can make a full 1 liter, conveniently supporting daily frequent hydration.

Sky Water Lemon Flavor (2L / 10L)

Designed with zero sugar and calories, it has a refreshing taste like lemon water. As a food with nutrient function claims, it contains vitamin C, making it easy to consume ingredients you want to take regularly in daily life.