Goji berries are used as a general tonic and to aid eyesight. They also protect the liver and kidneys and strengthen the immune system. They are said to improve circulation and improve sperm production. They are also used to improve the complexion and to fight cancer. Goji berries contain chemicals that aid the heart and helps maintain normal blood pressure and cholesterol levels. They are also used for sore joints, back pain, dizziness, diabetes, tuberculosis and coughs. Malaria and fevers are also treated with Goji berry. Goji berries are also said to have anti-aging properties. They are also used as a sleep aid. 
    A study done by the Beijing Medical University found them beneficial for treating allergies and psoriasis. Another chemical in Goji berries improves production of Human Growth Hormone (HGH) which helps muscle growth and prevents premature aging. It also fights arthritis and other types of inflammation. They increase energy, improve athletic performance and strengthens and purifies the blood. Another study found Goji berry tea effective at fighting obesity. Another study in China found it useful for gum disease. 
    Other studies have found Goji berries effective for a number of vision problems. It was said to aid night vision and improve the time it takes the eyes to adjust to light changes. It also appeared to reduce blind spots.