The changes that occur in the body in response to fasting depend on the length of the continuous fast. Technically the body enters into a fasting state eight hours or so after the last meal, when the gut finishes absorption of nutrients from the food.
In the normal state, body glucose, which is stored in the liver and muscles, is the body’s main source of energy. During a fast, this store of glucose is used up first to provide energy. Later in the fast, once the stores of glucose run out, fat becomes the next stored source of energy for the body. Small quantities of glucose are also ‘manufactured’ through other mechanisms in the liver. Only with a prolonged fast of many days to weeks does the body eventually turn to protein for energy.
This is the technical description of what is commonly known as ‘starvation’, and it is clearly unhealthy. It involves protein being released from the breakdown of muscle, which is why people who starve look emaciated and become very weak.
As the Ramadan fast only extends from dawn till dusk, there is ample opportunity to replenish energy stores at pre-dawn and dusk meals. This provides a progressive, gentle transition from using glucose to fat as the main source of energy, and prevents the breakdown of muscle for protein. The use of fat for energy aids weight loss, preserving the muscles, and in the long run reduces your cholesterol levels. In addition, weight loss results in better control of diabetes and reduces blood pressure.
A detoxification process also seems to occur, as any toxins stored in the body’s fat are dissolved and removed from the body. After a few days of the fast, higher levels of certain hormones appear in the blood (endorphins), resulting in a better level of alertness and an overall feeling of general mental well-being.
Balanced food and fluid intake is important between fasts. The kidney is very efficient at maintaining the body’s water and salts, such as sodium and potassium. However, these can be lost through sweating. To prevent muscle breakdown, meals must contain adequate levels of ‘energy food’, such as carbohydrates and some fat.
Hence, a balanced diet with adequate quantities of nutrients, salts and water is vital. The physiological changes that occur during a fast. The fasts of Ramadan can improve a person’s health, but – if the correct diet is not followed – can possibly worsen it! The deciding factor is not the fast itself, but rather what is consumed in the non-fasting hours. To fully benefit from fasting, a person should spare a great deal of thought to the type and quantity of food they will indulge in through the blessed month.
As mentioned in the section on spirituality, overeating can not only harm the body but it is thought also to interfere with a person’s spiritual growth during the month. A diet that has less than a normal amount of food but is sufficiently balanced will keep a person healthy and active during the month of Ramadan.
The diet should be simple and not differ too much from one’s normal everyday diet.
A Guest Editorial