by Adair Locke, MD. 1  Methylene blue is administered intravenously by anesthesia providers for a variety of clinical uses and may be used with increasing frequency as an intraoperative urologic marker dye due to an indefinite nationwide shortage of indigo carmine.
The Effects of Humidity on the Human Body. As discussed in Home Humidity and Allergies, humidity directly affects the amount of allergens in the indoor environment. In particular, high humidity causes both dust mite populations and mold colonies to grow, thereby greatly increasing allergy sufferers' total allergen load.
Problems Associated with Low Humidity. Health. Dry air in your home can cause or aggravate respiratory problems, dry out nasal passages and make you more susceptible to colds or the flu. Although winter weather is often blamed for these problems, another major cause is dry air produced by artificial heating.