Cortisol/DHEA Ratios in Depression

Depression in men is associated with more feminine finger length ratios

Variation in the influence of prenatal androgens is thought to be reflected in an individual s finger length ratio (2D:4D). Many recent studies have examined the relationship between adult finger length ratio and traits thought to be affected by prenatal androgens. For example, Martin, Manning, and Dowrick (1999) have suggested that increased risk of clinical depression is a cost of high organi...

Ratios in Paleoethnobotanical Analysis

Effect of Circuit Class Training for Eight Weeks on Changes in Ratios of F-Trp/BCAAs and Depression in People with Poststroke Depression

[Purpose] The purpose of the present study was to investigate the potential effects of circuit class training (CCT) on poststroke depression through changes in branched-chain amino acids (BCAAs) (isoleucine, leucine, and valine) and free-tryptophan (f-Trp). [Subjects] The study subjects were 40 stroke patients with major depressive disorder. The subjects were group-matched into an experimental ...

Sex ratios.

Jennions et al. introduce the different kinds of sex ratio and their biology.

Risk Ratios

In human genetics and genetic epidemiology, risk ratios can assume a number of different forms, including risk ratios for relatives, for candidate genes, and for genetic markers. The goal of many genetic studies is to quantify the risk of disease occurrence associated with particular genetic factors. The strength of this association can depend on interactions between environmental and genetic f...