It is normal to lose a small amount of hair. In fact, as human beings, we may lose at most 100 hairs every day, and we often don't realize it. However, sudden massive hair loss may indicate a wider range of health problems. Will the disease cause hair loss? The answer is yes. Continue reading, we will learn about some of the most common diseases that may lead to hair loss.

1. Alopecia areata

Hair loss has different forms. For example, Traction alopecia is caused by persistent excessive tension of hair (which may be due to too tight hairstyle), which will lead to alopecia.

On the other hand, alopecia areata is formed when the immune system attacks hair follicles, resulting in small pieces of hair loss. These patches can then be "connected" to make the affected area larger, which is most obvious on the scalp.

2. Anemia

As we all know, iron deficiency anemia can also lead to hair loss. In our bodies, iron is responsible for helping produce hemoglobin-the protein in our red blood cells. Then, these red blood cells are responsible for transporting oxygen around our bodies and to our tissues so that they can operate normally.

Iron deficiency reduces the body's ability to produce enough hemoglobin, which means that less oxygen can be delivered to your tissues. This forces the body to preferentially deliver limited oxygen to important parts of the body, which means that the oxygen obtained by parts like hair follicles is far less than that required for normal operation, which is the cause of hair loss.

3. Cancer

For many people, cancer and hair loss complement each other. Cancer patients sometimes experience severe hair loss, which seems to occur overnight and agglomerate hair fall out inexplicably. Although many people may think that what causes hair loss is just cancer itself, it is actually cancer treatment, such as chemotherapy, radiotherapy and even stem cell transplantation.

In terms of chemotherapy and radiotherapy, these therapies are designed to be aggressive to fight cancer as effectively as possible. Unfortunately, although these treatments try to target cancer cells, they can also target other cells in the body even if they work normally. This may include delivering oxygen to the hair follicle or the red blood cells needed by the hair follicle itself, resulting in hair loss.

Will cancer treatment and chemotherapy lead to complete hair loss? No. Cancer treatment including chemotherapy can lead to hair loss, but sometimes it can lead to hair thinning. The degree of hair thinning or hair loss caused by cancer treatment depends on a series of factors, including the type, dosage and individual sensitivity to drugs.

4. Depression

Although it is not often mentioned, mental diseases such as depression and hair loss may be related to depression that is known to cause hair loss in some people. Common symptoms of depression, such as low mood, drowsiness and low self-esteem, will cause people not to take good care of themselves as they do without depression.

Because this will affect a person's diet, thus reducing the amount of essential nutrients needed to support normal body functions, it will lead to a decline in hair health and make it more fragile.

Dry and fragile hair is more likely to break, which will lead to thinning and hair loss over time. Similarly, drugs used to treat depression also have side effects that lead to alopecia.