Depression — More Than Just Feeling Sad

Depression is one of the leading causes of disability worldwide. The World Health Organization estimates that 280 million people globally live with depression (WHO, 2023). In the U.S., about 1 in 6 adults will experience it at some point in their life.

What does depression actually feel like?

Most people think depression just means feeling sad. But it's much more than that. Depression can look like:

• Feeling empty or numb, not just sad
• Losing interest in things you used to enjoy
• Struggling to get out of bed or focus
• Changes in sleep and appetite
• Feeling worthless or hopeless

These symptoms last for weeks or months — not just a rough day.

Why are rates rising?

Depression rates have increased significantly since 2020. Isolation during the pandemic, economic stress, and reduced access to care all contributed. Young adults and women have seen the sharpest increases (CDC, 2023).

What works?

Nutrition and brain health: Research shows that what you put in your body can make a real difference for depression. Omega-3 fatty acids (specifically EPA, found in fish oil) have the strongest evidence — multiple large studies show EPA-dominant supplements significantly reduce depressive symptoms, especially when taken alongside antidepressants. B vitamins, particularly L-methylfolate and B12, help the brain produce neurotransmitters like serotonin and dopamine, and clinical trials show they can improve depression both on their own and when added to medication. 5-HTP is a natural building block for serotonin and shows particular promise for people who don't fully respond to antidepressants. Zinc has consistently shown an inverse relationship with depression — lower zinc, higher depression risk — and supplementing it has produced significant improvements in multiple trials. Magnesium and selenium also showed meaningful antidepressant effects in a large meta-analysis of 52 studies. Vitamin D is more nuanced: it doesn't appear to prevent depression in people with normal levels, but correcting a true deficiency can help. The common thread across all of these is brain health — these nutrients reduce neuroinflammation, support neurotransmitter production, protect against oxidative stress, and promote neuroplasticity, which is the brain's ability to adapt and heal. The emerging field of nutritional psychiatry now recognizes diet and targeted supplementation as legitimate, evidence-based tools alongside therapy and medication — not replacements, but meaningful additions to a complete treatment plan.

Exercise is also evidence-based. A large review found regular physical activity reduced depression symptoms comparably to antidepressants in some groups (Noetel et al., 2024).

The bottom line: Depression is not a character flaw or weakness. It's a medical condition with real treatments. If these symptoms sound familiar, speaking with a healthcare provider is the right move.

References:

World Health Organization (WHO). (2023). Depression fact sheet. who.int Centers for Disease Control and Prevention (CDC). (2023). Mental health data. cdc.gov Noetel, M., et al. (2024). Effect of exercise for depression. BMJ, 384, e075847.