Almost all beef cattle entering feedlots in the United States are given hormone implants to promote faster growth. The first product used for this purpose ­ DES (diethylstilbestrol) ­ was approved for use in beef cattle in 1954.

California State University, Northridge Human Sexuality By Ludwin Molina Spring, 1999 Introduction. Human sexuality plays a major role in everyone’s life. Regardless, whether we are or old, man or woman, American or Japanese, it is an integral part of what we do and who we are.

Most hormones initiate a cellular response by initially binding to either cell membrane associated or intracellular receptors.A cell may have several different receptor types that recognize the same hormone but activate different signal transduction pathways, or a cell may have several different receptors that recognize different hormones and

Aggression; Hormones; Parental behaviors; Sex differences; Sexual behavior; Steroids; Learning Objectives. Define the basic terminology and basic principles of hormone–behavior interactions.

The hormonal theory of sexuality holds that, just as exposure to certain hormones plays a role in fetal sex differentiation, such exposure also influences the sexual orientation that emerges later in the adult.

If you’re a woman, have you noticed that whenever you feel angry, tearful, headachy, a bit below par, or lacking in sex drive, someone – helpful or otherwise – will tell you that: ‘it must be your hormones’?

Oxytocin is a hormone that acts on organs in the body (including the breast and uterus) and as a chemical messenger in the brain, controlling key aspects of the reproductive system, including birth and lactation, and aspects of human behaviour.

HEALING WITH SEXUAL ENERGY. Sex for Health, Relationships and Spirituality. By Walter Last. Sex, or rather sexual energy, is a potent force in regard to our health, intimate relationships and spirituality, but the extent of this is rarely realized.

Health101.org presents. Early Sexual Maturity and Milk Hormones by Robert Cohen. The March, 2012 issue of the Journal of Human Biology contains a study in which cow’s milk consumption was associated with early sexual development.

How estrogen, progesterone and testosterone affect a woman’s sexual desire and functioning – and the factors that can affect hormone levels.