Understanding Ultraviolet Radiation
When it comes to sunlight, there are three types of radiation that we need to be aware of: UVA, UVB, and UVC. Each type has a different wavelength, with UVA having the longest and UVC being the shortest.
UVA rays have the ability to penetrate through the top layer of our skin, while UVB rays, due to their shorter wavelength, are unable to do so. Interestingly, certain UVA rays, known as UVA2, and UVB rays can worsen the symptoms of lupus, a chronic autoimmune disease. On the other hand, UVA1 rays may actually have protective effects.
It’s not just sunlight that can expose us to harmful UV radiation. Even indoor lighting sources can emit varying levels of UV radiation, which can be particularly concerning for individuals with lupus. Halogen lamps, incandescent bulbs, and fluorescent bulbs are all examples of indoor lighting that can emit UV radiation. It’s important to note that even low-level exposure to UV radiation over time can lead to skin damage.
Asthma and its Connection to Lupus
There appears to be a strong association between asthma and lupus, although the exact reasons behind this link remain uncertain. A comprehensive review of various studies has revealed that individuals with asthma are at a heightened risk of developing lupus. Furthermore, a study conducted over an 11-year period has shown that people with lupus have a significantly higher prevalence of asthma compared to the general population. This study also suggests that this correlation may be attributed to an immune system dysregulation.