The Male Biological Clock

Say "biological clock" and most people think "women." Yet men have biological clocks too, reveals Dr. Harry Fisch, one of the country's leading experts in male infertility and author of this groundbreaking new book, The Male Biological Clock. Men's clocks tick at a different rate from women's and of course cause an entirely different set of bodily and behavioral changes over the course of a lifetime. But while men's clocks don't strike a "midnight" toll heralding an end to fertility the way menopause does for women, male fertility, testosterone levels, and sexuality all do decline with age. Dr. Fisch's book emphasizes that even young men can have testosterone levels as low as those of much older men, leading to infertility, sexual problems, and other serious health issues. Another startling revelation is that men over thirty-five are twice as likely to be infertile as men younger than twenty-five. In addition, as men age, the quality of their sperm declines significantly, giving rise to an increased chance of a Down syndrome baby, other genetic abnormalities, and miscarriage. Every couple should know all the risks and issues facing men, because these affect two of the most important things in their life: their ability to have children and their capacity to have good sex. The Male Biological Clock is must reading for every man and every couple who is struggling to have children or improve their sex life. Many of Dr. Harry Fisch's findings are startling -- beginning with the fact that infertility is not mostly a women's problem -- and he offers many helpful suggestions for how to deal with declining testosterone, changing sexual needs, and the fertility industry. We have all heard stories of men becoming fathers in their seventies or even eighties, yet most of us are unaware that these are dangerously deceptive exceptions. Older men face a number of increased risks as fathers, and often find their sex lives and well-being changing considerably. The good news: Much can be done to slow down and even reverse the effects of a man's biological clock. The Male Biological Clock tells you what you need to know and how you can achieve optimal fertility and sexuality.

“Does anyone date anymore?” Today, the authorities tell us that courtship is in crisis. But when Moira Weigel dives into the history of sex and romance in modern America, she discovers that authorities have always said this. Ever since young men and women started to go out together, older generations have scolded them: That’s not the way to find true love. The first women who made dates with strangers were often arrested for prostitution; long before “hookup culture,” there were “petting parties”; before parents worried about cell phone apps, they fretted about joyrides and “parking.” Dating is always dying. But this does not mean that love is dead. It simply changes with the economy. Dating is, and always has been, tied to work. Lines like “I’ll pick you up at six” made sense at a time when people had jobs that started and ended at fixed hours. But in an age of contract work and flextime, many of us have become sexual freelancers, more likely to text a partner “u still up?” Weaving together over one hundred years of history with scenes from the contemporary landscape, Labor of Love offers a fresh feminist perspective on how we came to date the ways we do. This isn't a guide to “getting the guy.” There are no ridiculous “rules” to follow. Instead, Weigel helps us understand how looking for love shapes who we are—and hopefully leads us closer to the happy ending that dating promises.

Insect Clocks is mainly concerned with the phenomena in which ""environmental time"" has a practical implication for the life of insects for them to perform behavioral or physiological episodes at the ""right time"" and season. This text first discusses the concept of rhythms and clocks, along with the seasonal changes in the environment that affect a particular group of organisms. This book then explains circadian rhythms of insects. Photoperiodism and seasonal cycles of development; photoperiodic response, clock, and counter; and other types of insect clock are also tackled. This text concludes by explaining the anatomical location of photoreceptors and clocks. This publication will be invaluable to those interested in studying insects and their development affected by circles of influences.

What is healthy sperm or the male biological clock? This book details why we don't talk about men's reproductive health and how this lack shapes reproductive politics today. For more than a century, the medical profession has made enormous efforts to understand and treat women’s reproductive bodies. But only recently have researchers begun to ask basic questions about how men’s health matters for reproductive outcomes, from miscarriage to childhood illness. What explains this gap in knowledge, and what are its consequences? Rene Almeling examines the production, circulation, and reception of biomedical knowledge about men’s reproductive health. From a failed nineteenth-century effort to launch a medical specialty called andrology to the contemporary science of paternal effects, there has been a lack of attention to the importance of men’s age, health, and exposures. Analyzing historical documents, media messages, and qualitative interviews, GUYnecology demonstrates how this non-knowledge shapes reproductive politics today.

Popular science at its most exciting: the breaking new world of chronobiology - understanding the rhythm of life in humans and all plants and animals. The entire natural world is full of rhythms. The early bird catches the worm -and migrates to an internal calendar. Dormice hibernate away the winter. Plants open and close their flowers at the same hour each day. Bees search out nectar-rich flowers day after day. There are cicadas that can breed for only two weeks every 17 years. And in humans: why are people who work anti-social shifts more illness prone and die younger? What is jet-lag and can anything help? Why do teenagers refuse to get up in the morning, and are the rest of us really 'larks' or 'owls'? Why are most people born (and die) between 3am-5am? And should patients be given medicines (and operations) at set times of day, because the body reacts so differently in the morning, evening and at night? The answers lie in our biological clocks the mechanisms which give order to all living things. They impose a structure that enables us to change our behaviour in relation to the time of day, month or year. They are reset at sunrise and sunset each day to link astronomical time with an organism's internal time.

A medical breakthrough explained by the leading authority on the connection between health and your body clock Chronotherapy-adjusting the care of the body to coincide with the body's natural clock-is poised to be the next major revolution in medical science. An understanding and awareness of these rhythms will enable us to maximize the effects not only of medications and other treatments, but also of diets, exercise programs, and other daily routines. The Body Clock Guide to Better Health combines a detailed discussion of major issues such as sleep, exercise, and nutrition, with a comprehensive A-to-Z reference to specific disorders. Among the health concerns it addresses are AIDS, arthritis, asthma, ADD, backache, cancer, depression, diabetes, digestive problems, allergies, heart disease, chronic pain, sexual dysfunction, stroke, and complications from pregnancy. General chapters explore the big picture-including monthly cycles and life cycles-and provide invaluable advice on foods and dietary supplements, fitness, better sex, jet lag, and more. The first book to look at body rhythms from a practical perspective, The Body Clock Guide to Better Health offers readers the dual benefits of improving the treatment of specific conditions while boosting their overall health and wellness.

Environmental conditions change considerably in the course of 24 h with respect to abiotic factors and intra- and interspecific interactions. These changes result in limited time windows of opportunity for animal activities and, hence, the question of when to do what is subject to fitness maximisation. This volume gives a current overview of theoretical considerations and empirical findings of activity patterns in small mammals, a group in which the energetic and ecological constraints are particularly severe and the diversity of activity patterns is particularly high. Following a comparative ecological approach, for the first time activity timing is consequently treated in terms of behavioural and evolutionary ecology, providing the conceptual framework for chronoecology as a new subdiscipline within behavioural ecology. An extensive Appendix gives an introduction to methods of activity modelling and to tools for statistical pattern analysis.

A candid assessment of the pros and cons of delayed motherhood. Biology does not bend to feminist ideals and science does not work miracles. That is the message of this eye-opening discussion of the consequences of delayed motherhood. Part personal account, part manifesto, Selvaratnam recounts her emotional journey through multiple miscarriages after the age of 37. Her doctor told her she still "had time," but Selvaratnam found little reliable and often conflicting information about a mature woman's biological ability (or inability) to conceive. Beyond her personal story, the author speaks to women in similar situations around the country, as well as fertility doctors, adoption counselors, reproductive health professionals, celebrities, feminists, journalists, and sociologists. Through in-depth reporting and her own experience, Selvaratnam urges more widespread education and open discussion about delayed motherhood in the hope that long-lasting solutions can take effect. The result is a book full of valuable information that will enable women to make smarter choices about their reproductive futures and to strike a more realistic balance between science, society and personal goals.