白血病是一种严重的血液疾病，因为它对患者的身体产生了许多不良影响，因此在治疗过程中常常需要剃光头。为什么要这样做呢？让我们来了解一下。

首先，白血病治疗通常包括化疗和放疗两种方式，这两种疗法对于控制癌细胞的增长非常有效。然而，这些治疗方法也会对正常细胞造成损伤，其中就包括头发毛囊。由于治疗过程中可能导致头发大量脱落，剃光头可以帮助患者更好地应对头发脱落的问题。此外，医生通常会建议患者在开始治疗之前就剃光头，这是为了减少治疗期间对患者心理的压力。

Secondly, shaving the head also helps to improve hygiene and prevent infection. During chemotherapy, the immune system of leukemia patients is often weakened, making them more susceptible to infections. Hair can harbor bacteria and other pathogens, and by removing it, the risk of infection is reduced. Additionally, without hair, it becomes easier for patients to maintain good personal hygiene, which is crucial for their overall well-being.

第二，剃光头还有助于改善卫生状况和预防感染。在化疗期间，白血病患者的免疫系统通常较弱，使得他们更容易感染。头发会滋生细菌和其他病原体，通过去除头发，感染的风险得到了降低。此外，没有头发，患者更容易保持个人卫生，这对他们的整体健康至关重要。

Lastly, shaving the head can also be seen as a sign of solidarity and support for leukemia patients. When someone shaves their head in support of a friend or family member with leukemia, it shows that they are standing by them during this difficult time. This act of kindness can provide emotional strength and comfort to the patient, making them feel less alone in their battle against the disease.

最后，剃光头还可以被视为对白血病患者的团结和支持的象征。当有人为了支持患有白血病的朋友或家人而剃光头时，这显示了他们在这个艰难的时刻与他们站在一起。这种善举可以给予患者情感上的力量和安慰，让他们感到在与疾病的斗争中不再孤单。

In summary, shaving the head is often recommended for leukemia patients undergoing treatment for several reasons. It helps them cope with hair loss caused by chemotherapy, improves hygiene and reduces the risk of infection, and can also serve as a symbol of support and solidarity. Ultimately, the decision to shave one's head is a personal one, but it can have positive effects on both the physical and emotional well-being of leukemia patients.

总之，对于接受白血病治疗的患者来说，剃光头通常是一个被推荐的选择，原因有几个。它能够帮助他们应对由化疗引起的脱发问题，改善卫生状况并降低感染风险，同时也可以作为一种支持和团结的象征。最终，剃光头的决定是个人的，但它对于白血病患者的身心健康都有积极的影响。

English translation:

Leukemia, being a serious blood disorder, often requires shaving the head during treatment due to the various adverse effects it has on the patient's body. But why is this necessary? Let's delve into the reasons behind it.

Firstly, leukemia treatment typically involves chemotherapy and radiation therapy, which are highly effective in controlling the growth of cancer cells. However, these treatment methods also damage normal cells, including hair follicles. Hair loss can be a significant side effect, and shaving the head helps patients better deal with this issue. Additionally, doctors often recommend patients to shave their heads before starting treatment to reduce the psychological stress during the process.

Secondly, shaving the head also aids in maintaining good hygiene and preventing infections. Leukemia patients often have weakened immune systems during chemotherapy, making them more susceptible to infections. Hair can harbor bacteria and other pathogens, and by removing it, the risk of infection is reduced. Furthermore, without hair, it becomes easier for patients to maintain personal hygiene, which is crucial for their overall well-being.

Lastly, shaving the head can also be seen as a sign of solidarity and support for leukemia patients. When someone shaves their head in support of a friend or family member with leukemia, it demonstrates their unwavering support during challenging times. This act of kindness can provide emotional strength and comfort to the patient, alleviating their sense of loneliness in their battle against the disease.

In summary, shaving the head is often recommended for leukemia patients undergoing treatment for several reasons. It helps them cope with hair loss caused by chemotherapy, improves hygiene, reduces the risk of infection, and can also serve as a symbol of support and solidarity. Ultimately, the decision to shave one's head is a personal one, but it can have positive effects on both the physical and emotional well-being of leukemia patients.