The scalp functions as an extension of the body’s skin, reacting to the desert climate with inflammation or dryness that can prematurely trigger hair shedding. According to Dr. Keene, maintaining a healthy scalp environment is the necessary foundation for follicle longevity. When the scalp is compromised by environmental stress, hair follicles often shift into a resting phase earlier than normal, resulting in weaker strands and visible thinning.
Nutrition and hydration play a critical role in mitigating these effects. Because hair follicles rely on consistent nutrient delivery via the bloodstream, deficiencies in protein or essential vitamins can weaken the hair shaft. Notably, Dr. Keene points out that Vitamin D deficiency remains prevalent among Arizonans, largely due to lifestyle factors like heavy sunscreen use and limited direct sun exposure. She advises patients to undergo blood testing before starting supplements to ensure dosage accuracy.



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