Khaberni - With the arrival of Ramadan, the rhythm of daily life changes significantly; food, sleep, and work schedules change, and patterns of physical and social activity transform.
These changes are not confined to the body alone, but also extend to the brain, which is directly affected by changes in energy sources, sleep hours, and hormones that regulate the biological rhythm.
Therefore, many fasting individuals frequently ask: Does fasting affect concentration and mood? And can the brain become more or less efficient during hours of abstaining from food?
The brain and energy: What happens during fasting?
The brain is one of the most energy-consuming organs in the body; it consumes about 20% of the body's total energy even though it weighs only 2% of the body's weight.
Under normal circumstances, the brain primarily relies on glucose (a simple sugar) as an energy source. However, as hours of fasting pass and glucose levels in the blood decrease, the body begins to activate alternative metabolic mechanisms, the most prominent of which are using fatty acids and producing what is known as ketone bodies in the liver.
Studies in metabolic neuroscience indicate that these ketone bodies, like beta-hydroxybutyrate, can become an effective energy source for the brain. Research published in various journals has shown that intermittent fasting can stimulate cellular repair processes in the brain and enhance the production of neurotrophic factors, the most important of which is brain-derived neurotrophic factor, which plays an important role in the formation of neural connections and in learning and memory.
Concentration and attention during fasting hours
The effect of fasting on concentration varies from person to person and is impacted by several factors such as sleep quality, meal composition, and hydration level.
Some studies examining the impact of Ramadan fasting on cognitive performance found that changes in attention and memory are generally limited in healthy individuals, especially when an appropriate sleep pattern is maintained.
However, some fasters may experience a temporary decrease in concentration in the last hours before the meal. This is often associated with decreased energy levels or mild dehydration, and is not directly caused by fasting.
Conversely, some studies suggest that fasting may improve the ability to concentrate in the short term in some cases, possibly due to reduced glucose fluctuations in the blood or increased secretion of certain neurotransmitters related to alertness.
Withdrawal symptoms: Coffee and smoking
Important factors that affect concentration and mood in the early days of Ramadan include what are known as withdrawal symptoms, especially among individuals who consume large amounts of coffee or tea or among smokers.
Caffeine is a stimulant that affects the central nervous system, and the sudden cessation of caffeine during fasting hours leads to symptoms such as headaches, fatigue, concentration difficulties, and occasionally mood swings.
Research shows that caffeine withdrawal symptoms can begin within 12 to 24 hours of stopping its consumption, and can last several days before the brain adapts to its absence. This is associated with changes in adenosine receptors in the brain, which play an important role in regulating alertness and feelings of sleepiness.
The same applies to smokers; temporary cessation of nicotine during fasting hours may lead to withdrawal symptoms that include anxiety, irritability, difficulty concentrating, and increased hunger.
This is due to nicotine's impact on the reward system in the brain through dopamine, and thus the decrease in its levels may temporarily reflect on mood and attention. These symptoms are often more pronounced in the early days of Ramadan before the body gradually adapts.
Mood and psychological balance
At the level of mood, the picture is more complicated. Fasting can be associated with increased stress or irritability in some individuals, especially in the early days as the body adjusts to dietary and sleep changes. But after a period of adjustment, studies in health psychology indicate that many fasters notice improvements in psychological stability and a sense of calm.
This improvement may be linked to several factors, including hormonal changes, a relative decrease in diet-related inflammation, as well as spiritual and social factors that characterize the month of Ramadan. Changes in neurotransmitters such as serotonin and dopamine, which play a key role in mood regulation, might also influence mood.
Sleep: The crucial factor
One of the most important factors affecting brain function during fasting is sleep. In Ramadan, many people experience significant changes in sleep patterns due to suhoor, Taraweeh prayers, and staying up late. Numerous studies have shown that lack of sleep or disruption of the daily rhythm can clearly affect concentration, memory, and mood.
Studies indicate that changes in sleep timings during Ramadan are the most influential factor in mental performance, more than fasting itself. Thus, maintaining a sufficient number of sleep hours, even if distributed in intervals, is crucial for cognitive performance.
Dehydration and its effect on the brain
Mild dehydration can impair certain cognitive functions such as attention and mental processing speed. Therefore, some fasters may experience mild headaches or difficulty concentrating during hot days or after significant physical effort.
However, these effects are often temporary and can be avoided through adequate fluid intake between the meal and suhoor.
How to maintain brain performance in Ramadan?
To maintain focus and psychological balance during Ramadan, experts recommend several simple steps, including getting enough sleep and regulating its timing as much as possible, consuming balanced meals at the meal and suhoor containing proteins, fibers, and complex carbohydrates, as well as drinking adequate amounts of water between the meal and suhoor.
It is also advised to avoid excessive consumption of simple sugars, which may cause sharp fluctuations in blood glucose levels, and to maintain moderate physical activity.
So, the scientific evidence available suggests that fasting in Ramadan generally does not lead to significant deterioration in brain functions in healthy individuals. Instead, some research suggests that fasting may stimulate beneficial biological processes for the brain, such as improving neural flexibility and activating cellular repair mechanisms.
However, the actual impact on concentration and mood depends largely on lifestyle factors, particularly sleep, nutrition, and hydration, in addition to adapting to temporary cessation of stimulants such as caffeine and nicotine.
In other words, the brain adapts significantly to fasting, but the way a person lives through the month of Ramadan determines whether this adaptation translates into mental clarity and psychological tranquility or into temporary fatigue and a decline in concentration.
