Friday, September 21, 2007

The Biology of Human Longevity: Inflammation, Nutrition, and Aging in the Evolution of Lifespans

Discussion of a new book The Biology of Human Longevity by Caleb Finch


Greetings,

Here is a new book for discussion:

The Biology of Human Longevity:
Inflammation, Nutrition, and Aging in the Evolution of Lifespans

by Caleb E. Finch (Hardcover - Jul 17, 2007)


Here are my preliminary comments made after the first reading of this book:

This is a monumental book, which reviews and discusses over 3,000 scientific publications on mechanisms of aging and longevity, with special emphasis on the role of inflammation in senescence and age-related degenerative diseases. The author is an internationally recognized leader in the field of biogerontology, and his volume could serve as a useful reference book for a wide readership including biomedical scientists, biogerontologists and clinicians in areas of vascular disease, diabetes, obesity, Alzheimer disease and other neurodegenerative diseases, genetics of aging and longevity, animal models of aging, anthropology and primatology, evolutionary biology, demography and epidemiology.

This volume is not a particularly easy reading, because of the complexity of the study topic with mixed and sometimes even controversial research findings, making it difficult to reach general conclusions. Fortunately the book is well illustrated with numerous tables and pictures (136 illustrations), which makes it much easier to follow.

The book starts with a discussion of the role of inflammation and oxidation in aging and chronic diseases (chapter 1) including an overview of experimental models for aging studies, description of inflammation process, as well as four types of damage (free radical damage, glyco-oxidation, chronic proliferation, and mechanical bystander effects). This chapter also discusses arterial aging and atherosclerosis, Alzheimer disease and vascular-related dementias, inflammation in obesity, and the processes of normal aging in the absence of specific diseases. The author makes a conclusion that in most chronic diseases of aging, the oxidative stress and inflammation are prominent; moreover, inflammatory changes are observed in many aging tissues even without specific pathology.

Other topics discussed in this book include the role of infections, inflammogens, and drugs in aging process (chapter 2); energy balance, inflammation, and aging (chapter 3); the role of nutrition and infection in the developmental influences on aging (chapter 4); genetics of aging and longevity (chapter 5); evolution of human life span with forecasts for the future (chapter 6).

In my opinion the most interesting part of this book is chapter 4, where the author provides an excellent overview of the Barker hypothesis of fetal origins of adult disease, and expands this hypothesis further to consider the role of early-life infections and inflammation in aging process later in life.

As for technical limitations of this volume, note that some publications cited in text of the book are missing in the Bibliography, and their authors are missing in the Name Index of cited studies too. For example, the following book is discussed three times at page 310:

Gavrilov, L. A., and N. S. Gavrilova. 1991. The Biology of Life Span: A Quantitative Approach. New York: Harwood Academic Publishers. http://tinyurl.com/2am4l3

It would be helpful if this reference be also mentioned in the Bibliography section, and the author's names be included in the Name Index for cited studies too. :)
Less important is a misspelling of a name, when this publication is cited for a second time at page 310 -- (GRavrilov and Gavrilova, 1991) instead of (Gavrilov and Gavrilova, 1991). Perhaps some of these minor suggestions may be useful in a future second print of this interesting book.

See also some interesting excerpts from this book on the links between hibernation, caloric restriction, and life extension.

Have you seen this Book?
Post your comments below!:

Key words:
Aging, Biology of Human Longevity, Caleb Finch, Dietary Restriction, Human Longevity, Infections, Inflammation, Life Span, Nutrition

The abridged and edited version of this book review will be published by the end of year 2007 by this journal:

Quarterly Review of Biology



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Tuesday, May 08, 2007

Body Size and Human Longevity

Discussion of a new book Human Body Size and the Laws of Scaling: Physiological Performance, Growth, Longevity... by Thomas T. Samaras, et al.


Greetings,

Here is a new book for discussion:

Human Body Size and the Laws of Scaling:
Physiological, Performance, Growth, Longevity
and Ecological Ramifications

by Thomas T. Samaras, Andrzej Bartke and C. David Rollo


Book description:
This book provides the most comprehensive coverage available of the human body and its relation to a variety of extrinsic and intrinsic factors.
This unique book takes a systems approach to human size and its relation to various aspects of life, including changes in biochemical factors, chronic disease risk, nutrition and longevity. Other topics include the advantages and disadvantages of taller and shorter height, the causes of the obesity epidemic, and the harmful effects of catch-up and accelerated growth. The ramifications of increase levels of growth hormone are also discussed.
Other topics include the relations among birth weight, body size and intelligence, and several chapters deal with animal size and longevity and evolutionary ecology and its relation to body size and changing physical characteristics, including brain size and longevity.


The chapters are listed below and the book contains over 1000 references:


Chapter Contents:

Why the Study of Human Size is Important

Human Scaling and the Body Mass Index

Advantages of Taller Human Height

Advantages of Shorter Human Height

Body Height and its Relation to Chronic Disease and Longevity

BMI and Weight: Their Relation to Diabetes, CVD, Cancer and all-Cause Mortality

The Obesity Epidemic, Birthweight, Rapid Growth and Superior Nutrition

Long-lived Mutant, Gene Knockout and Transgenic Mice

The Evolutionary Ecology of Body Size with Special Reference to Allometry and Survivorship

Overview of Research on Giant Transgenic Mice with Emphasis on the Brain and Aging

Speculations on the Evolutionary Ecology of Homo Sapiens with Special Reference to Body Size, Allometry and Survivorship

Birthweight, Height, Brain Size and Intellectual Ability

Impact of Body Size on Resources, Pollution, the Environment and Economics

Final Remarks on Human Size, Scaling and Ecological Implications

Appendix A:
Symbols, Acronyms and Abbreviations used in text

Appendix B:
Technical review of the molecular and physiological aspects relevant to body size, free radicals and aging

Index.


Contributors:
Andrzej Bartke, Southern Illinois University School of Medicine
C. David Rollo, McMaster University, Canada
Thomas T. Samaras, Reventropy Associates, San Diego, California


To read comments on this book, and to post your own thoughts, click here


Key words:
Body size, Human Longevity, Laws of Scaling, Height, Obesity Epidemic, Catch-up growth, Body Mass Index, Human Height, Chronic Disease, Diabetes, CVD, Cancer, all-Cause Mortality, Birthweight, Rapid Growth, Nutrition, Allometry, Survivorship, Thomas T. Samaras, Andrzej Bartke, C. David Rollo

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