1.   Cellular immune function was normal.

2.   Immune function was screened in five of the nine patients requiring biopsy and all tests were normal.

3.   And beta carotene fights against cancers of the lung, stomach and breast, and stimulates immune functions.

4.   Another possibility is that good social support prevents depression, which also weakens some immune functions.

5.   Because immune function tends to wane with age, older people seem to be more susceptible than younger people to infection from the same microbes.

6.   Beta carotene may further protect the body by enhancing immune function.

7.   A growing body of research shows that meditation does just that, by reducing heart rate and blood pressure, improving immune function and decreasing stress-hormone levels.

8.   Both groups also tend to experience problems with balance and impaired immune function.

9.   Compounds found in garlic and onions, for example, appear to lower blood cholesterol and bolster immune function.

10.   For example, Boston University psychologist David McClelland discovered that people who are exposed to nonromantic forms of love also experience improvement in immune functions.