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the actinic rays of direct sunlight are known to have disinfectant properties, to be instrumental in the production of vitamin D in the skin and to be the trigger mechanism in photosensitive dermatitis, squamous cell carcinoma of the eye in cattle and of the vulva in sheep and solar dermatitis.

Patient discussion about sunlight

Q. Is it possible to be allergic to sun??? I met this girl the other day that told me she is allergic to the sun. Is it actually possible???

A. Some people are sensitive to sun-light, not because of an allergic reaction but because of different conditions or diseases that involve this symptom. Some of these reactions may be similar to an allergic reaction because the skin gets irritated, however biochemically it does not involve the same mechanism as an allergic reaction. The sensetivity to sun an immunologic and sometimes auto-immunologic symptom.

Q. What roll does the sun have in causing cancer

A. Hi again:

This is a book for everybody here:
Read it and learn to understand why you are fooled day by day!

Q. I feel some effects due to less exposure to sunlight. I heard that UV lighting is effective for depression. I’m living in northwest pacific; the summers are very nice but way to short. I feel some effects due to less exposure to sunlight. I have been told that sun light helps the production of the chemical in the brain that we are deficient of. If true, are there certain types of fixtures and/or bulbs that I should try.

A. Its also called seasonal affective disorder:

(SAD) depression with fatigue, lethargy, oversleeping, overeating, and carbohydrate craving recurring cyclically during specific seasons, most commonly the winter months.

I would about UV. Perhaps you should get a fluorescent light fixture for the area where you spend the most time each day and turn it on.

The web sites that sell the commercial light boxes want several hundred dollars or even more. (Seems like rip off to me.)
The web page at

says "studies suggest that regular fluorescent lights will work as well. UV (ultraviolet) light can damage eyes and skin, so it must be filtered out. It is best to buy a commercially built light box to be sure of the exact amount of light and to be sure that there are no isolated "hot spots" which could damage eyes. Many people still prefer full spectrum (minus UV) light because it i

More discussions about sunlight
References in periodicals archive ?
Gary Gerber, president of Berkeley's Sun Light and Power said: "I am honored and pleased that EAH chose Sun Light & Power to build America's largest affordable housing solar project here at Crescent Park.
We welcome the addition of Cogenra's highly efficient solar cogeneration solution to the market and its potential to accelerate the adoption of solar in California," said Gary Gerber, president of Sun Light & Power.
Sun Light & Power then installed the SunPower solar array at EcoVillage, with assistance from the new trainees.
Along with Sun Light & Power, we were able to develop a package that will provide immediate savings to the Food Bank.
Residents should take precautions while going out from home and avoid direct sun light, an official at the centre said.
The system, manufactured by SunPower and installed by Sun Light and Power, composed of 96 panels rated at 215 watts each is expected to produce over 27,000 kW hours of renewable, green power that will have zero greenhouse gas emissions and will save the Center nearly $5,000 annually in energy costs.
annual hauling of dewatered sludge from the wastewater treatment plant" located at 15500 Sun Light Near Way, Pflugerville, TX 78660.
8 kW solar photovoltaic energy system powering Santana's operations was designed and installed by Sun Light & Power, the Berkeley-based entity at the vanguard of turnkey installations of alternative energy solutions for residential, commercial, and municipal markets.
a) Note: Generated power and usage will depend on solar cells placement, amount of sun light provided to the solar panels, and type of display connected to the solar-powered system.
This house is a partially renewable energy house with twelve solar panels that harness the sun light which is then stored in a sealed battery tank.
Phillip Eastman, PE manager of technology, said the company wants to evaluate converting sun light to electricity.