The phrase "reduce immunity" is correct and can be used in written English.
You can use it when discussing the weakening of a person's immune system. For example, "Lack of adequate rest can reduce immunity, making it more difficult for the body to fight off illnesses."
Stress not only increases blood pressure but also messes with your hormones sufficiently to reduce immunity, increase depression and make you fat.
In the recent cases, Aspergillus introduced into a vulnerable part of the body coupled with steroids, which reduce immunity and promote fungus growth, was particularly deadly.
Control measures which reduce individual exposure to malaria are expected to reduce disease, but also to eventually reduce immunity.
It can reduce immunity to lung infections and increase the severity and duration of an episode of flu.
They reduce immunity or the body's natural ability to resist infection.
MSC have been shown to reduce immunity-mediated liver injury, oxidative stress, and stimulate liver regeneration in a range of preclinical models, but there still remains a lack of detailed studies delineating the mechanisms by which MSC achieve their effects.
Patients with ADs often have significantly reduced immunity related to chronic immunosuppressive treatments and intrinsic immune suppression in some diseases, such as SLE and T1D.
Rates of illness, reflecting poor nutrition and reduced immunity to disease, are rising alarmingly.
In Deceit and Self-Deception, Trivers synthesises all of his research, including the discovery of a clear correlation between lying and reduced immunity.
These tend to emerge if you are old, infirm, suffer from a chronic illness or respiratory disease, or have a reduced immunity, from HIV or undergoing chemotherapy for instance.
Pregancy reduces immunity in women, to avoid rejection of the developing foetus, and in the later stages the growing foetus can press on the diaphragm reducing lung capacity and increasing the risk of pneumonia.
