TED Health I'm an adult! Why do I have acne? | CBC's The Dose
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Sep 2, 2025 In this enlightening discussion, Kerri Purdy, head of dermatology at Dalhousie University, sheds light on the often misunderstood issue of adult acne. She reveals that genetics and hormones are significant risk factors, rather than diet. The conversation dives into the various types of acne adults face, including cystic and comedonal. Kerri also shares the latest treatment options and emphasizes the need for proper diagnosis, particularly in distinguishing acne from rosacea. Overall, the talk empowers listeners with knowledge and encourages a patient approach to skincare.
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Four Interconnected Causes Of Acne
- Acne arises from four linked processes: increased oil, inflammation, bacteria (P. acnes), and follicle plugging.
- Emerging evidence suggests inflammation may precede plugging in the acne cascade.
Diet Is Not A Universal Acne Cause
- Large population studies don't convincingly link diet to acne, though high dairy intake may be pro-inflammatory.
- Individual triggers exist, but broad dietary restrictions are not evidence-based for everyone.
Stop Picking To Prevent Scars
- Do not pick or squeeze acne lesions because picking increases scarring risk and pain.
- Let clinicians reduce lesion count and advise strategies to minimize temptation to pick.