How to determine which vitamins you are deficient in?

Dry eyes: Vitamin A, Carotene deficiency
Bad breath: Vitamin B6, Zinc deficiency
Weak teeth: Vitamin A, Calcium, Iron deficiency
Chapped lips, peeling: Vitamin A, B2 deficiency
Anemia, cold hands and feet: Vitamin B6, Iron, Folic acid deficiency
Easily fatigued, low energy: Vitamin B1, B2, B6 deficiency
Excessive hair loss, dandruff: Vitamin A, B6, Zinc, Calcium deficiency
Dry, yellowing, split hair: Vitamin E, Iron deficiency
Dark circles under eyes: Vitamin A, C, E deficiency
Appearance of dark spots, melasma: Vitamin C, E, Folic acid deficiency
Early wrinkles, multiple: Vitamin A, C, E, Selenium deficiency
Skin lacks elasticity and luster: Vitamin B1, B2 deficiency
Dry, rough skin with large pores: Vitamin A, B6, Zinc deficiency
Delayed development: Vitamin A, B1, B2 deficiency
Poor vision, light sensitivity, dryness: Vitamin A, B1, B2, Selenium deficiency
Night sweats, spontaneous sweating: Vitamin D, Calcium, Iron deficiency
Purple-red tongue, cracked corners of mouth: Vitamin B3, B6 deficiency
Vitamins in food
Vitamin B1: Oats, Chinese cabbage, Tomatoes, Eggplant, Whole rice, Legumes, Meat, Fish, Eggs, Green vegetables
Vitamin A: Lemons, Carrots, Mangoes, Asparagus, Celery, Tomatoes, Apricots, Vegetables, Potatoes, Egg yolks
Vitamin B2: Pork liver, Soybeans, Leeks, Shiitake mushrooms, Yeast, Brown rice, Liver, Lean meat, Eggs, Vegetables, Pollen
Vitamin B3: Mung beans, Nori, Figs, Chicken, Peanuts, Grains, Vegetables, Fruits
Vitamin B5: Black rice, Peas, Corn, Oranges
Vitamin B6: Green peppers, Aloe vera, Luffa, Cauliflower, Bananas, Beets, Eggs, Grains, Milk, Liver, Legumes
Vitamin B11: Winter melon, Lychee, Scallions, Jackfruit
Vitamin B12: Potatoes, Millet, Job’s tears, Water chestnuts
Vitamin C: Goji berries, Kiwifruit, Pineapple, Strawberries, Jujubes, Chili peppers, Peanuts, Cucumbers, Bean sprouts, Mushrooms, Bok choy, Cilantro, Baby bok choy, Fruits
Vitamin D: Milk, Black fungus, Silver fungus, Pork blood, Cream, Egg yolks, Lean meat, Chestnuts, Bone broth
Vitamin E: Pine nuts, Water spinach, Chinese broccoli, Cashews, Grains, Vegetable oils, Celery, Walnuts, Lettuce, Peanuts, Nuts
Vitamin H: Strawberries, Lean pork, Grapefruit, Grapes
Vitamin K: Chinese cabbage, Cheese, Peanut oil, Yogurt
Vitamin P: Apricots, Cherries, Jujubes, Oranges
Calcium: Peanuts, Walnuts, Kale, Loose-leaf kale, Baby bok choy, Cauliflower, Broccoli, Pods, Peas, Dried figs, Bananas, High-calcium orange juice, Citrus fruits
Iron: Peaches, Red kidney beans, Liver, Egg yolks, Black fungus, Kelp, Sesame paste, Mushrooms, Fish, Blood, Lean meat, Soybeans, Spinach
Zinc: Beef, Chestnuts, Lamb, Eggs, Green onions, Walnuts, Sunflower seeds, Liver, Seafood, Lean meat, Shellfish, Whole wheat flour, Soybeans, Golden needle mushrooms
Selenium: Straw mushrooms, Celery
Folic acid: Chickpeas, Kidney beans, Asparagus, Soybeans, Spinach, Sunflower seeds, Nuts
Plant estrogens (anti-aging): Soybeans, Tofu, Soy milk, Tofu pudding, Apples, Carrots, Oats, Plums, Olives, Sunflower seeds, Potatoes, Green tea, Coffee, Flaxseeds