Foods that increase serotonin include salmon, turkey, eggs, cheese, blueberries, and dark chocolate. They contain tryptophan and other nutrients your brain uses to synthesize feel-good neurotransmitters, supporting better mood during the winter.According to surveys, almost 40% of American adults experience the “winter blues” each year. And at least 5% develop Seasonal Affective Disorder (SAD), a type of depression triggered by reduced sunlight and shorter days in the cooler months. This seasonal change can disrupt the brain’s production of serotonin, a neurotransmitter that affects mood, energy, and sleep.While eating more mood-boosting foods alone isn’t a cure, the right nutrients can make a big difference. Here are some of the best options to include this season.
6 Foods that increase serotonin
1. Wild-caught salmon
Salmon is an excellent source of omega-3 fatty acids, which support brain function and may help regulate mood through their positive effects on:
- Inflammation, which research has linked to mental health issues like depression
- Cell membranes
- Neurotransmitter activity, including that of serotonin
This fatty fish also contains tryptophan, an essential amino acid your body uses to make serotonin as well as melatonin, a hormone that governs your sleep-wake cycle.Furthermore, salmon provides a healthy dose of vitamin D, a nutrient that’s often harder to get during the winter due to limited sun exposure. Vitamin D plays a vital role in the production of both serotonin and melatonin.Choose wild-caught salmon when possible; studies show it contains up to three times more vitamin D than farmed varieties. Try it baked with seasonal vegetables, or simmered into a rich chowder.
2. Turkey
Turkey has a reputation for making you sleepy after Thanksgiving dinner due to its tryptophan content. While that drowsiness may be more likely due to the heavy carbs, alcohol, and sheer volume of food, turkey does contain this amino acid. And that means it may help boost serotonin, potentially supporting mood and relaxation.Try roasting raw turkey breast (not deli meat) with sweet potatoes, and serve with sautéed greens for a simple, spirit-lifting winter meal.
3. Eggs
Eggs–especially the yolks–are also rich in tryptophan. The yolks also contain several other mood-supportive nutrients, including:
- Omega-3s
- Vitamin D
- Vitamin B6, which helps convert tryptophan into serotonin
- Tyrosine, a precursor to dopamine, another feel-good neurotransmitter
- Choline, a nutrient needed to produce acetylcholine, which supports memory, attention, and emotional regulation
Try a whole-egg omelet with spinach or other veggies for a delicious and mood-boosting breakfast.
4. Cheese
Cheese is another good source of tryptophan–especially if you enjoy aged and harder varieties like gouda and parmesan. These cheeses contain less water and a more concentrated amount of protein.They also provide fat which, together with protein, slows digestion and helps reduce blood sugar spikes and crashes after meals. This can promote more stable energy, which in turn may help level out mood and alleviate anxiety for some people.Recent research also suggests that compounds in aged or fermented cheeses may positively influence the gut-brain axis–the communication network between your digestive system and brain. This pathway plays a role in regulating mood and stress response.Pair a small serving of aged cheese with whole-grain crackers or fruit for a satisfying winter snack.
5. Blueberries
In animal studies, blueberry-enriched diets increased brain serotonin levels and reduced anxiety-like behavior, especially during times of stress.While blueberries don’t directly boost serotonin, research suggests they may influence serotonin-related pathways–mainly through their antioxidant and anti-inflammatory effects. These effects appear to come from polyphenols–particularly anthocyanins, the pigments that give blueberries their deep color. These compounds help:
- Reduce brain inflammation
- Support healthy communication between brain cells
- Influence how the body processes tryptophan, potentially helping preserve it for serotonin production rather than diverting it to deal directly with stress
Add a handful of blueberries to yogurt or oatmeal for a sweet, serotonin-boosting breakfast or snack.
6. Dark chocolate
Chocolate with 70% cocoa or higher contains tryptophan, along with other compounds like:
- Flavonoids: Antioxidants that reduce inflammation
- Theobromine: A mild, mood-lifting stimulant similar to caffeine
While cocoa’s tryptophan content is small, these other bioactives help reduce inflammation and oxidative stress–two factors that can interfere with serotonin production. Some studies also suggest that high-cocoa chocolate may act as a prebiotic, positively influencing gut bacteria and the gut-brain axis, which may boost mood.Enjoy a small serving (1 to 2 ounces, or 2-4 small squares) of 70-85% dark chocolate to get the benefits without overdoing it on sugar.
Other natural remedies for seasonal affective disorder
While nutrition can make a noticeable difference, many people experience greater relief by combining it with other natural remedies for SAD, such as:
- Morning sunlight or light therapy to help reset your circadian rhythm; a disrupted sleep-wake cycle can affect serotonin production and overall mood
- Gentle movement, i.e. a brisk walk during daylight hours
- Consistent sleep habits to support nighttime melatonin production
- Social connection to reduce isolation
- Daily routines to provide structure
If you’re feeling low most days for more than two weeks, or your symptoms are interfering with daily life, talk to a healthcare provider to explore additional options.
Summary
Winter doesn’t have to dim your spirit. Foods that boost serotonin–like salmon, turkey, eggs, cheese, blueberries, and dark chocolate–can help you feel more optimistic and even-keeled during the colder months. Pair nourishing foods with light exposure, movement, and other healthy habits to keep your mood bright all season long.
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