Description: SATURDAY, June 2 (HealthDay News) -- Researchers are discovering glimmers of hope in alternative therapies for various cancers.

Two studies being presented Saturday at the American Society of Clinical Oncology annual meeting in Chicago found some promise in ginseng in easing cancer-linked fatigue and flaxseed for the treatment of prostate cancer. A third study, however, seems to shut the door on shark cartilage as an antidote for lung cancer.

Flaxseed, when taken daily for 30 days, seemed to slow the growth of prostate tumors, researchers say.

In this study, 161 men scheduled to undergo prostatectomy were divided into four groups: one maintaining their regular diet; one taking 30 grams of flaxseed daily for a month prior to surgery; one in which men restricted their dietary fat; and one in which men took flaxseed and restricted their dietary fat.

Men who were taking flaxseed, in either the low-fat or normal diet group, had the slowest rate of tumor growth, reported researc