While a complete understanding of acne remains elusive, the primary cause is well-established: an overproduction of sebum. Sebum, an oily substance crucial for skin and hair health, experiences a surge during adolescence. When excess sebum mixes with dead skin cells, it can obstruct hair follicles, leading to acne lesions.
This blockage creates an ideal environment for bacteria to thrive, culminating in the inflammatory response we recognize as a pimple. Testosterone, a hormone present in both males and females, stimulates sebum production. During puberty, elevated testosterone levels can trigger an overreaction in the body, resulting in excessive sebum secretion, particularly on the face, back, and shoulders. For most individuals, testosterone levels normalize by their early twenties, often resolving acne issues.
Recent research suggests a hereditary component to acne. However, predicting individual susceptibility remains challenging. Other contributing factors include stress, diet, skin irritation, hormonal fluctuations, and certain medications.
Regarding diet, skim milk has been identified as a potential contributing factor. Contrary to popular belief, there’s no conclusive evidence linking chocolate, sugary drinks, or greasy foods to acne outbreaks. Certain medications, such as lithium, barbiturates, anabolic steroids, and androgens, can induce or worsen acne.
Emerging studies highlight narrowed hair follicles as a possible acne trigger. These constricted follicles may impede the expulsion of dead skin cells, leading to their accumulation with sebum and bacteria, forming acne lesions. Several factors can contribute to follicle narrowing, including excessive cell shedding within the follicle, abnormal cell binding, and water retention.
It’s a common misconception that squeezing pimples is beneficial. However, this practice can exacerbate the problem by spreading bacteria and potentially causing scarring, which can be permanent in severe cases. Moreover, touching acne-prone areas can worsen the condition by transferring oil and bacteria from your hands. Similarly, hair can contribute to acne by depositing oil onto the skin. Maintaining clean hair is essential. Additionally, avoid wearing hats and sweatbands, as they trap skin oils and worsen acne.