What Causes Hair Loss? From Genetics to Stress, a Dermatologist Explains

Hair loss is common and can affect both men and women throughout life. While it's normal to shed some hair every day, excessive thinning or patchy loss may point to a health issue. Figuring out the cause is the first step in finding the right treatment, and for many people, that starts with Dr. Brian Dubow’s insight at Dr. Dubow Dermatology in Beverly Hills, California.

Genetics Play a Major Role

One of the most frequent causes of hair loss is hereditary. Androgenetic alopecia, often referred to as male or female pattern baldness, is passed down through families and tends to develop gradually over time. In men, it usually starts with a receding hairline or thinning at the crown. In women, it often shows up as a general widening of the part or overall thinning without complete bald spots. This type of hair loss is progressive, but with early intervention, there may be ways of slowing it down.

Hormonal Changes Can Disrupt Hair Growth

Hormones have a powerful impact on the hair growth cycle. Shifts that occur during pregnancy, menopause, thyroid imbalances, or after stopping hormonal birth control can all lead to noticeable shedding. In many cases, the hair will regrow once hormones stabilize, but if it doesn’t, treatment may be needed to help restore balance and support regrowth.

Stress and Illness Are Often Overlooked Triggers

High stress levels or a recent illness can push hair follicles into a resting phase, leading to a condition called telogen effluvium. This usually causes sudden, diffuse thinning that may be especially noticeable while brushing or showering. The good news is that this type of hair loss is often temporary. As the body recovers, hair growth typically resumes within a few months.

Nutritional Deficiencies and Scalp Health Matter

Hair needs proper nourishment to grow well. A lack of key nutrients like iron, vitamin D, or protein can interfere with the hair cycle and result in thinning. In addition, scalp conditions such as seborrheic dermatitis or psoriasis may create inflammation that damages hair follicles over time. Professional treatment for these issues at Dr. Dubow Dermatology can go a long way in improving hair density and texture.

Autoimmune Conditions May Be Involved

In some cases, the immune system mistakenly attacks the body’s own hair follicles. This leads to patchy hair loss, as seen in conditions like alopecia areata. The severity and pattern can vary, and the course is often unpredictable. However, Dr. Dubow can offer treatments that calm inflammation and may encourage regrowth, especially when started early.

A Tailored Approach Makes All the Difference

Hair loss can have a real emotional impact, and there’s no one-size-fits-all solution. That’s why getting a professional evaluation is so important. At Dr. Dubow Dermatology in Beverly Hills, California, each case is carefully assessed to determine the most likely causes and to recommend an approach that fits the individual’s needs, whether that includes topical treatments, oral medication, or lifestyle adjustments.

Take Action against Hair Loss

If you’ve noticed more hair in the sink or on your pillow, or if your part seems wider than it used to be, don’t wait to get it checked out. Early intervention can be key to protecting the hair you have and encouraging regrowth where it’s possible. A consultation at Dr. Dubow Dermatology can help you understand what’s going on and what your next steps should be. Schedule a consultation with Dr. Brian Dubow in Beverly Hills, California, at (310) 888-4070.