Experiencing hair loss can be distressing, especially when it happens rapidly. While it’s normal to shed between 50 to 100 strands of hair daily, understanding when this shedding crosses into abnormal territory is essential. But what factors contribute to increased rates of hair loss?
Before delving into this, it’s crucial to grasp the hair cycle. Hair growth occurs in four stages: anagen (active growth), catagen (transition to rest), telogen (resting phase), and exogen (shedding). Typically, each hair follicle undergoes this cycle 10 to 30 times over a lifetime. However, as individuals age, the anagen phase shortens, leading to fewer follicles in active growth.
Notably, not all shedding equates to hair loss. Dr. Lynn McKinley-Grant from Howard University College of Medicine emphasizes that breakage, often caused by excessive brushing or tight hairstyles, can mimic hair loss. Additionally, harsh products or styling routines contribute to breakage.
Yet, shedding more hair than regrows may signal alopecia, encompassing various types linked to hormonal shifts or autoimmune disorders. Dr. Dan Baumgardt from the University of Bristol notes the multitude of potential causes, including diet, stress, medication, and scalp health.
For instance, telogen effluvium can result in sudden, widespread shedding due to factors like surgery, illness, or hormonal changes. Interestingly, the body may redirect energy away from hair growth during times of stress, McKinley-Grant explains.
Male and female-pattern hair loss, characterized by receding hairlines or overall thinning, are common forms of alopecia. Scalp conditions like psoriasis or seborrheic dermatitis can also impact hair growth by causing inflammation.
Although those with longer hair may notice more shedding, significant changes like thinning or bald patches warrant medical attention. McKinley-Grant underscores the role of dermatologists in assessing overall health through skin, hair, and nail conditions.
While numerous hair growth products flood social media, consulting a doctor is crucial. Many products lack scientific backing and may not be effective. McKinley-Grant advises against trying such products without professional guidance.”