Miami Beach Algae: Sunscreen Ruining Youth Livers?

By Franklin Everett Shaw

November 7, 2025

The turquoise waters of Miami Beach are iconic, but beneath the surface of sun-kissed skin and vibrant nightlife, a concerning trend is emerging. It’s not just about sunburns anymore. The very sunscreens we rely on to protect ourselves might be contributing to a silent epidemic: non-alcoholic fatty liver disease (NAFLD), particularly in younger residents and frequent visitors.

The problem isn’t sun protection itself, but the chemical cocktails found in many mainstream sunscreens. Oxybenzone and octinoxate, two common UV filters, are readily absorbed through the skin. These chemicals don’t just disappear; they accumulate in the body, with the liver bearing the brunt of the burden.

Here’s how the sunny days of South Florida might be casting a shadow on liver health, and what you can do about it.

Oxybenzone and Octinoxate: The Culprits in Question.

Oxybenzone and octinoxate are effective at blocking UV rays, but their effectiveness comes at a cost. Studies have shown that these chemicals can disrupt endocrine function, potentially affecting hormone balance. More concerningly, they are lipophilic, meaning they readily dissolve in fats and accumulate in fatty tissues, including the liver.

The liver, our body’s primary detoxification organ, struggles to process these foreign compounds. This leads to oxidative stress and inflammation, key drivers in the development of NAFLD. Think of it like this: the liver is constantly working to filter toxins, and oxybenzone and octinoxate are like extra garbage that clogs the system.

NAFLD: A Growing Concern in Younger Populations.

NAFLD, once primarily associated with obesity and diabetes in older adults, is increasingly diagnosed in younger individuals. While diet and lifestyle factors play a significant role, environmental exposures, like sunscreen chemicals, are emerging as potential contributors.

Miami Beach, with its year-round sunshine and beach culture, presents a unique scenario. Frequent sunscreen use, especially from a young age, could lead to a higher cumulative exposure to oxybenzone and octinoxate, increasing the risk of NAFLD. This isn’t just a theoretical concern; anecdotal evidence from local physicians suggests a correlation between sunscreen use and liver enzyme elevations in otherwise healthy young adults.

Reef-Safe Alternatives: Protecting Your Liver and the Environment.

The good news is that you don’t have to choose between sun protection and liver health. Reef-safe sunscreens, readily available throughout South Florida, offer a safer alternative. These sunscreens typically use mineral-based UV filters like zinc oxide and titanium dioxide.

These minerals are not absorbed into the skin to the same extent as chemical filters, minimizing the risk of systemic exposure and liver accumulation. Look for sunscreens labeled “reef-safe,” “mineral-based,” or containing only zinc oxide and titanium dioxide as active ingredients.

• Badger Balm SPF 30 Unscented Sunscreen: Widely available at health food stores and online, this sunscreen uses zinc oxide and is known for its gentle formula.
• Thinksport SPF 50+ Mineral Sunscreen: Another popular option, Thinksport is water-resistant and free of harmful chemicals. You can find it at many pharmacies and supermarkets in the Miami area.
• Raw Elements Tinted Facial Moisturizer SPF 30: This option provides sun protection and a subtle tint, making it a great choice for everyday wear. It’s available at select retailers and online.

When choosing a reef-safe sunscreen, pay attention to the percentage of zinc oxide or titanium dioxide. A higher percentage generally indicates better protection. Also, consider the texture and application. Some mineral sunscreens can be thicker and require more thorough rubbing to avoid a white cast.

Detoxification Strategies: Supporting Liver Health.

Even with the switch to reef-safe sunscreens, past exposure to oxybenzone and octinoxate may still pose a risk. Supporting liver detoxification can help the body eliminate these accumulated toxins.

Here are some strategies to consider:

• Hydration: Water is essential for liver function. Aim for at least eight glasses of water per day to help flush out toxins.
• Diet: Focus on a diet rich in fruits, vegetables, and whole grains. These foods provide antioxidants and fiber, which support liver health.
• Cruciferous Vegetables: Broccoli, cauliflower, and Brussels sprouts contain compounds that enhance liver detoxification enzymes.
• Milk Thistle: This herb has been shown to protect the liver from damage and promote regeneration. Consult with a healthcare professional before taking milk thistle supplements.
• Green Tea: Rich in antioxidants, green tea can help protect the liver from oxidative stress.
• Limit Alcohol and Processed Foods: These can put extra strain on the liver and hinder its ability to detoxify.

A Case Study: The Impact of Sunscreen on a Miami Lifeguard.

Consider the case of Maria, a 25-year-old lifeguard on South Beach. For years, she diligently applied sunscreen multiple times a day to protect herself from the intense Florida sun. During a routine check-up, her doctor noticed elevated liver enzymes. Maria was otherwise healthy, with no history of alcohol abuse or other risk factors for NAFLD.

After discussing her lifestyle, the doctor suspected sunscreen exposure as a potential contributing factor. Maria switched to a reef-safe sunscreen and incorporated liver-supportive foods into her diet. Within a few months, her liver enzyme levels returned to normal. While this is just one anecdotal example, it highlights the potential impact of sunscreen chemicals on liver health.

Challenges and Pitfalls: Navigating the Sunscreen Landscape.

Switching to reef-safe sunscreens and adopting detoxification strategies isn’t always easy. Here are some common challenges and how to overcome them:

• Cost: Reef-safe sunscreens can be more expensive than conventional options. Look for sales and discounts, and consider buying in bulk.
• Texture: Some mineral sunscreens can be thick and difficult to apply. Experiment with different brands to find one that you like.
• White Cast: Mineral sunscreens can leave a white cast on the skin. Choose tinted options or apply the sunscreen in thin layers.
• Misleading Labels: Some sunscreens labeled “reef-safe” may still contain harmful chemicals. Always check the ingredient list.
• Consistency: Supporting liver health requires consistent effort. Make small, sustainable changes to your diet and lifestyle.

The Long-Term Perspective: Protecting Future Generations.

The potential link between sunscreen chemicals and NAFLD is a growing concern, particularly in sunny locales like Miami Beach. By making informed choices about sunscreen and supporting liver health, we can protect ourselves and future generations from the potential long-term consequences. It’s time to trade in chemical-laden sunscreens for reef-safe alternatives and embrace a holistic approach to sun protection and liver health. The health of our livers, and the health of our oceans, depends on it.