Acne affects up to 50 million Americans every year, making it the most common skin condition in the U.S. If you’ve ever had a stubborn pimple pop up right before an important event, or dealt with breakouts that seem to stick around forever, you know how frustrating acne can be. It’s also not just a “teenage thing.” While acne is most common in our teens and 20s, it can persist into our 30s, 40s, or beyond. So, what’s going on beneath the surface of our skin?
The Basics
Acne begins in our pores, the tiny openings in the skin that connect to hair follicles. These follicles are home to sebaceous (oil) glands that produce sebum, an oily substance designed to keep our skin hydrated and protected. However, problems arise when the skin produces too much sebum, combined with improper shedding of dead skin cells. This combination can clog pores and create the perfect environment for acne to develop.
The Main Culprits
Four key factors drive acne:
1. Excess Oil Production: Hormones (especially androgens) can kick oil glands into overdrive during puberty, menstrual cycles, pregnancy, or times of hormonal imbalance.
2. Improper Skin Shedding: When dead skin cells don’t shed properly, they mix with excess oil and clog pores.
3. Bacteria: Cutibacterium acnes (C. acnes) is a bacterium that naturally lives on the skin. When pores become clogged, it creates an ideal environment for C. acnes to grow and multiply, contributing to the development of acne.
4. Inflammation: Acne isn’t just about clogged pores—it’s also an inflammatory condition. When C. acnes overgrow in clogged pores, your body responds by sending white blood cells to fight the bacteria. This immune reaction leads to swelling, redness, and those painful, inflamed pimples.
Lifestyle and Acne
While hormones are often the main driver of acne, lifestyle factors can also play a big role:
- Stress: When you’re stressed, your body produces more cortisol, a hormone that can stimulate oil production and worsen acne.
- Diet: Research suggests that a high-glycemic diet (think sugary snacks, soda, and white bread) may worsen acne. These foods cause blood sugar spikes, leading to inflammation and increased sebum production. On the flip side, low-glycemic diets may help reduce breakouts. There’s also evidence linking cow’s milk, especially skim milk, to acne, possibly due to hormones in the milk that can trigger inflammation and pore clogging.
- Personal Products: Using skincare, makeup, or even haircare products that clog pores can make acne worse. Look for “non-comedogenic” on labels to avoid this.
Types of Acne
Not all acne is the same, and understanding the different types can help you treat it more effectively:
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Non-inflammatory Acne:
- Blackheads: Open clogged pores that darken when exposed to air.
- Whiteheads: Closed clogged pores that appear as small, white bumps.
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Inflammatory Acne:
- Papules: Small, red, inflamed spots without pus.
- Pustules: Pimples filled with pus.
- Nodules and Cysts: Painful, deep lumps under the skin that can lead to scarring.
Key Takeaways
Acne is common and treatable! Whether you’re trying over-the-counter products or working with a dermatologist, the key is to act early. It’s much easier to treat acne than to deal with the scars it can leave behind. So, don’t stress too much! Acne may be a nuisance, but with the right approach, you can take control and improve your skin.
Originally published for ScriptDerm in December 2024.
