Light is very important to us. We cannot imagine our lives without light. We cannot deny that fact that light is very important factor in our lives. In the olden days sun was considered god and sunlight was believed to cure all possible ailments. The early man didn’t have an alarm clock but still got up in the morning, the reason is the man’s response to light. Just as in humans, animals also react to light. We humans have seen various development phases and we have changed so much. But these animals still behave as per various changes in nature. Light is indispensible in our lives and in winters when we do not get sunlight we feel quite depressed? Sun is associated with happiness in our lives. That is the reason we feel depressed in winters.
We are greatly influenced by light. When there is day light our body is alert and we work but in the evening in the absence of light our body secretes a hormone melatonin which induces sleep. This hormone is responsible for other functions of the body also. So it can be said that in dearth of light the functionality of this hormone gets affected and thus affecting the various other functions of the body. It was not long ago that scientists found out the affect of light on human body. It was discovered that people felt depressed during winter months because of lack of light. The scientist started using light therapy to cure their patients suffering from SAD or Seasonal Affective Disorder. It was discovered that when the patient is exposed to a certain range of light then the melatonin hormone is suppressed and serotonin hormone is released by the body. The serotonin hormone helps the body to get alert and active. There are other types of light therapies also which help to treat various problems. One such therapy is bright light therapy. This therapy helps the patient’s to fight sleep related problems. This therapy is also useful in treating fatigue. There are various skin disorders also that are treated with light therapy. It is believed that certain wavelength of light hinder the growth of micro organisms responsible for skin infection. Even psoriasis and eczema can also be treated with light therapy.
In light therapy the patient is made to sit is front of a light therapy box. The box has a specified nanometres range of light. The light in the box imitates the natural light. It gives the feeling of natural light to the patient. It is very much practised by doctors now a days and it is showing quite fruitful results in patients. This is very easy and safe therapy but still it should be practised with caution. It can be safely used in the confined boundary of our home. It is little expensive but the advantages of the therapy are many. There are various theories which show that light is very important for our body. Scientists have found out that children grow more in summers and spring seasons.
