Here are a few options for a description for the WordPress post tag “預防癌症” (Preventing Cancer) in Traditional Chinese, catering to different levels of detail and emphasis:

**Option 1: Concise and Direct**

> 了解更多關於預防癌症的方法，包括健康的飲食、定期檢查和生活習慣的改善。
>
> (Learn more about ways to prevent cancer, including a healthy diet, regular checkups, and improvement of lifestyle habits.)

**Option 2: Emphasizing Proactivity**

> 積極預防癌症，從今天開始！本標籤分享關於健康飲食、生活習慣調整、早期篩檢等全面的資訊，助您降低患癌風險，保持健康。
>
> (Proactively prevent cancer, starting today! This tag shares comprehensive information on healthy eating, lifestyle adjustments, early screening, and more, to help you reduce the risk of cancer and stay healthy.)

**Option 3: More Detailed and Explanatory**

> 癌症預防指南：透過了解癌症的成因、風險因素，以及有效的預防策略，您可以主動保護自己。本標籤收錄了關於飲食建議、運動計劃、壓力管理、定期身體檢查和疫苗接種等相關資訊，助您提升健康，降低患癌風險。
>
> (Cancer Prevention Guide: By understanding the causes of cancer, risk factors, and effective prevention strategies, you can proactively protect yourself. This tag includes information on dietary recommendations, exercise plans, stress management, regular physical examinations, and vaccinations, to help you improve your health and reduce the risk of cancer.)

**Option 4: Focused on Information & Resources**

> 探索關於癌症預防的知識庫。本標籤精選了可靠的資料來源、最新的研究進展，以及實用的建議，助您掌握關鍵的預防方法，及早發現潛在風險。
>
> (Explore the knowledge base on cancer prevention. This tag features selected reliable sources, the latest research progress, and practical advice to help you grasp key prevention methods and identify potential risks early.)

**Key Considerations when choosing:**

* **Target audience:** Who are you writing for? This affects the tone and level of technical detail.
* **Content of the posts:** Do your posts focus on practical tips, research, or a combination?
* **SEO:** Consider relevant keywords (e.g., 健康飲食, 定期檢查, 風險 factors – healthy diet, regular checkups, risk factors) to optimize for search.
* **Word Count:** WordPress typically truncates descriptions if they are too long, so consider brevity.

I recommend you pick the option that best reflects the content you will be tagging under “預防癌症”. Good luck!