“The healthy fats in nuts are great for all organ health, including hair, skin, and nails,” says Gohara. Walnuts, almonds, cashews, and more of these tasty morsels contain a variety of vitamins plus zinc that can help you avoid a deficiency in any of these nutrients, which has been linked to hair loss. Agyeman loves pistachios, which contain biotin, a B-vitamin known for its role in maintaining strong and healthy hair. “Additionally, pistachios are rich in antioxidants, which can help protect hair from oxidative stress and damage,” she adds. Incorporate them into pesto or crush them to coat fish fillets for a crunchy, nutrient-filled crust.