Summer heat poses risks and hidden benefits for brain health
Meteorologists predict that this summer will be exceptionally hot and dry. These are not the most favourable forecasts, as such conditions can affect our brain and well-being.
Neurologist Dr. Steven Allder told the "Independent" that high temperatures can weaken cognitive abilities such as attention, short-term memory, and decision-making.
Prolonged exposure to heat or dehydration further impairs brain efficiency.
Allder explains that when the body overheats, it redirects resources away from the brain to focus on regulating body temperature, which can lead to slower thought processes and reduced mental clarity.
The hotter it is, the more aggressive
There is evidence that high temperatures can trigger a wide range of emotions.
Allder explains that elevated levels of heat are associated with increased irritability, frustration, and even aggression,
This may result from disrupted sleep, discomfort, or an increased reaction to stress.
Warm weather can also have positive effects on the brain, mainly due to increased exposure to sunlight.
Allder notes that sunlight stimulates the production of serotonin, which improves mood, sleep, and overall emotional balance.
Higher levels of vitamin D resulting from sun exposure are also associated with better cognitive functioning.
Prolonged exposure to high temperatures can lead to systemic inflammatory processes, oxidative stress, and vascular dysfunction, negatively affecting the brain. To protect brain health on hot days, it is essential to maintain adequate hydration. Researchers emphasise that even mild dehydration can impair cognitive functions,
Limiting the time spent outdoors during the hottest hours, wearing lightweight clothing, and using fans or air conditioning can help maintain a safe body temperature.
