A recent scientific study conducted in Saudi Arabia revealed a troubling link between anxiety disorders, insomnia, stress, and a decrease in the number of immune cells known as 'natural killer' (NK) ...

Natural killer (NK) cells are the bodyguards of our immune system. As a first line of defense, they destroy invading ...

Chronic stress and poor sleep may weaken immunity by reducing natural killer cells, a new study finds, highlighting the ...

In students with trouble sleeping, there was also a link between higher anxiety and lower NK cell levels. This means that ...

Kimchi may do far more than add flavor to meals—it could help fine-tune the human immune system. A clinical study using ...

Optimizing immunity requires a holistic approach. A well-balanced diet that includes the best foods for immune system health can help.

According to new research published in the journal npj Science of Food on November 17, 2025, kimchi doesn't just boost your ...