What organs affect alopecia?

Author: Sabrina Schmeler  |  Last update: Monday, July 21, 2025

More than 80 types of autoimmune diseases exist and affect different organs and tissues,8 but alopecia areata affects hair follicles. These tiny structures sit just below the surface of the skin, producing different types of hair depending on their location on the body.

What organ controls hair loss?

If you have a problem with your thyroid, you may see thinning hair. Some people notice that their hair comes out in clumps when they brush it. Is regrowth possible? Yes, treating the thyroid disease can reverse the hair loss.

What causes alopecia to flare up?

It is possible that emotional stress or an illness can bring on alopecia areata in people who are at risk, but in most cases, there is no obvious trigger.

What organ failure causes hair loss?

Many People With Kidney Disease Notice Hair Loss

One study of 101 people who were on dialysis for end-stage kidney disease (also called end-stage renal disease) reported that almost 10 percent experienced hair loss.

What organ damage causes hair loss?

Alopecia Areata: An autoimmune disease that affects the skin and scalp, causing hair to suddenly fall out. Thyroid Problems: An overactive or underactive thyroid can both be contributing factors to hair loss. Cancer: Cancer such as Hodgkin's lymphoma may cause hair loss but typically, chemotherapy is the primary cause.

What HAIR LOSS Says About Your HEALTH: Top 15 Causes of Hair Loss (Doctor Explains)

What internally can cause hair loss?

The most common form of diffuse hair loss is telogen effluvium, which results in loss of more than 200 scalp hairs per day. It typically develops after an acute event, such as a severe illness, major surgery, thyroid disease, pregnancy, iron-deficiency anemia, malnutrition or rapid weight loss, or vitamin D deficiency.

What organ is connected to the hair?

Hair structure

The hair root is in the skin and extends down to the deeper layers of the skin. It is surrounded by the hair follicle (a sheath of skin and connective tissue), which is also connected to a sebaceous gland. Each hair follicle is attached to a tiny muscle (arrector pili) that can make the hair stand up.

What gut issues cause hair loss?

So, hair loss can be one of the consequences of any serious digestive problem. Afflictions like Irritable Bowel Syndrome (IBS) or Inflammatory Bowel Disease (IBD) can impede digestion. This means that your body might not get the proper nutrients it needs from the food you eat.

What diseases cause alopecia?

The most common diseases related to alopecia areata include autoimmune diseases, such as thyroid disease and type 1 diabetes, and atopic conditions (related to allergies), such as asthma, allergic rhinitis (hay fever), atopic dermatitis, and other forms of eczema.

Can liver issues cause hair loss?

Symptoms of cirrhosis include coughing up blood, hair loss and jaundice (a yellowing of the skin and eyes).

Why do I suddenly have alopecia?

Hair loss (alopecia) can affect just your scalp or your entire body, and it can be temporary or permanent. It can be the result of heredity, hormonal changes, medical conditions or a normal part of aging. Anyone can lose hair on their head, but it's more common in men.

What can reverse alopecia?

There is no cure for alopecia areata—only treatment. In mild cases, hair usually grows back, sometimes on its own. However, if treatment is necessary, steroid injections and topical medications may be recommended. But there have been no reliably effective treatments for severe cases of alopecia areata until recently.

What organ does alopecia areata affect?

More than 80 types of autoimmune diseases exist and affect different organs and tissues,8 but alopecia areata affects hair follicles. These tiny structures sit just below the surface of the skin, producing different types of hair depending on their location on the body.

What labs are drawn for alopecia?

Laboratory tests should evaluate iron and vitamin D levels and thyroid function. Clinical evaluation should establish if hair density is normal or decreased and if the scalp shows diffuse or patchy alopecia. The severity of hair shedding should be assessed by a pull test.

What is your body lacking when you have hair loss?

Only riboflavin, biotin, folate, and vitamin B12 deficiencies have been associated with hair loss. Vitamin B2 (riboflavin) is a component of two important coenzymes: flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) [22].

What is the root cause of alopecia?

What causes alopecia areata? Alopecia areata is an autoimmune disease that causes your immune system to attack your body. Your immune system attacks your hair follicles because it thinks they're foreign invaders — bacteria, viruses, parasites or fungi — that cause infection, illness and disease.

Which deficiency causes alopecia?

Vitamin D Deficiency

It helps in the creation of new hair follicles and supports the health of existing ones. Low Vitamin D levels can lead to hair thinning and, in some cases, alopecia areata, a condition that causes patchy hair loss.

What are the parasites in alopecia?

The role of gut parasites in alopecia areata. Gut parasites like blastocystis hominis and dientamoeba fragilis are common parasites often overlooked as potential contributors to autoimmune conditions, including alopecia areata.

Can probiotics help alopecia?

A well-balanced gut is linked to immune regulation, which is crucial in autoimmune conditions like alopecia. By addressing gut dysbiosis and inflammation, probiotics could offer a supportive approach to managing this condition.

Can a bad gallbladder cause hair loss?

Most people further resign to their gut's reaction as 'this is how my body behaves', while a few sort it out with a physician's advice if it bothers much. However in all of this, there is really no correlation made between chronic digestive disorders and hair health.

What is the correct organ system for hair?

The integumentary system is the largest organ of the body that forms a physical barrier between the external environment and the internal environment that it serves to protect and maintain. The integumentary system includes the epidermis, dermis, hypodermis, associated glands, hair, and nails.

How to stimulate dead hair follicles?

Massaging your scalp may seem too simple, but it can help stimulate the hair follicles and encourage growth. It works because it increases blood flow to the follicles, which can activate the dormant ones. Try performing a scalp massage for five minutes on yourself every day.

What gland controls hair?

The sebaceous gland secretes a mixture of fats (triglycerides, wax esters, squalene, and cholesterol) and cellular debris, which is discharged as sebum through the sebaceous duct connecting the gland to the hair follicle.

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