People with allergies should ideally not keep pets. If you really can't do that, the American Academy of Allergy, Asthma & Immunology recommends: not letting pets into the bedroom, regularly vacuuming the room where pets live, and washing the pet weekly.

　　Let your mouth cause trouble again

　　Eat as little processed or refined food as possible, minimize sugar intake, and avoid high-fat and high-calorie foods.

　　Make sure the food you eat is rich in the following nutrients that can reduce the chances of allergies: omega-3 fatty acids (fish such as salmon and sardines), protein (including chicken, fish, and legumes, but soybeans are a common allergen), antioxidants (fruits and vegetables, such as green vegetables containing vitamin C and dark-colored vegetables containing beta-carotene). Adults can consume 400 IU of vitamin E per day.

　　In addition, people with allergies should not drink ice water, and traditional Chinese medicine even advocates against eating too much cold food to avoid stimulating and triggering allergies.

　　Drink enough water

　　When your body is dehydrated, the cells of the mucous membranes lining the respiratory and gastrointestinal tracts shrink, creating gaps between the cells. This allows foreign substances like pollen to penetrate the cells and trigger allergic reactions.

　　Training to adapt to hot and cold environments

　　Moderate exercise can activate your immune cells and boost your immunity. Swimming is recommended by many doctors because many allergy sufferers are not necessarily caused by dust mites, but rather by weather changes and large temperature differences between day and night. Swimming can train you to adapt to cold water, temperature, and humidity; it can also improve your lung capacity and prevent allergic diseases caused by poor lung function. Expectant mothers bear a great responsibility.

　　Expectant mothers with a family history of allergies should avoid eating nuts such as peanuts and pine nuts, as these are common allergens and a baby's immature immune system may overreact to them.

　　It is recommended to breastfeed after the baby is born. This is because breast milk is rich in antibodies, which can enhance the baby's immunity.

　　Studies have found that infants under one year old whose parents have allergies and who are breastfed or fed hypoallergenic formula are one-third as likely to develop allergies by age five compared to infants who are not breastfed or fed hypoallergenic formula.

　　Keep mucous membranes moist

　　If you have respiratory allergies, your mucous membranes are likely to be easily irritated and sensitive.

　　To make a natural nasal spray: Take a bottle with a nozzle, pour in a cup of lukewarm filtered water, mix in half a teaspoon of salt and a pinch of baking soda, and you have a spray. First, hold your right nostril closed and spray into your left nostril, then switch sides and spray into your right nostril.

　　Utilizing steam

　　If your allergies cause nasal congestion, you can inhale steam for 15 to 20 minutes twice a day. Steam can relieve thick nasal mucus and dry, irritated nasal membranes. You can sit in the bathroom with the hot water tap running, or buy a steam cleaner and inhale the steam.

　　Relax your work and life

　　Stress can affect the body's hormone secretion, weaken the immune system, and trigger various allergic reactions, so it's essential to learn to relax and enjoy life. No matter how busy or tired you are, don't forget to use methods to reduce stress, such as getting enough sleep and engaging in healthy and moderate interpersonal interactions.