Researchers from the School of Psychology and Sports Sciences, North Umbria University tested the effects of Maca on trained male cyclists. The athletes completed a 40 kilometer timed cycling trial and were then supplemented with Maca or placebo for two weeks. They all then completed a second 40 kilometer timed cycling trial.

The Malaysian herb Eurycoma longifolia Jack (Long Jack root) was supplemented to male partners of infertile or sub-fertile couples. 75 men completed the full cycle of 3 months of supplementation with 200mg of Long Jack root daily. Follow-up semen analysis in these patients showed significant improvement in all semen parameters.

European researchers who are part of the Prospective Investigation into Cancer and Nutrition (EPIC) study that there is a correlation between higher levels of vitamins B2 and B6 and a lower risk of developing colorectal cancer.      The study included 1,365 patients diagnosed with colorectal cancer and 2,319 age and gender-matched control subjects. Blood samples obtained upon enrollment between 1992 and 1998 were analyzed for vitamins B2, B6 and B12, and 8 variants of genes that encode enzymes related to one-carbon metabolism, which involves these vitamins.

Experiments conducted at The University of Texas MD Anderson Cancer Center in Houston demonstrated that Gamma-Tocotrienol helped suppress pancreatic tumor growth as well as making the cancerous tumors more sensitive to gemcitabine, one of two drugs approved to treat the disease.      In their introduction to the article, Dr. Bharat B.