Protein
Animals aren’t the only sources of protein. Soy products (e.g, tofu and tempeh) and peas are packed with protein. Other good sources include seitan (made from gluten), chickpeas (chana), lentils (dals) and nutritional yeast, etc.
Vitamin B12
A lack of vitamin B12 can make you feel tired and weak. To get your fill, stock up on fortified cereals, tempeh, strawberries, banana, beans, spinach, fortified rice, and soy drinks — or take a supplement. The recommended daily amount for most adults is about 2.4 milligrams but consult with your doctor to see what’s right for you.
Essential fatty acids
A lack of essential fatty acids has been associated with problems related to brain health, such as cognitive impairment and depression. To get your essential fatty acids, pile up on whole grains and leafy green vegetables. And try snacking on a small handful of unsalted nuts, like almonds, walnuts, or pistachios (watch your portions; nuts are high in calories). You can also add flax seeds, chia seeds to your food and smoothies.