Dr. Michael J. Breus, 11/30/11

Clinical Psychologist; Board Certified Sleep Specialist

A message to night owls: There's news that your bedtime -- and those late-night snacks -- may be preventing you from dropping those stubborn extra pounds.

Peter Abaci, M.D., 11/29/11

Chronic pain specialist

Evidence strongly dictates that a key ingredient of putting together a long-term plan for aging well is to comprise a detailed family history.

Heidi Dietrich, 11/29/11

Writer, journalist, and athlete living in Seattle.

I picked up full time bike commuting again in the absolutely worst time of year. Fortunately, however, I'm lucky to have stellar cycling facilities at work that make commuting through the rain and dark a bit more tolerable.

Jean Fain, L.I.C.S.W., M.S.W., 11/28/11

Licensed psychotherapist and author, 'The Self-Compassion Diet'

If your Thanksgiving Day feast has already become last weekend's regrettable splurge, you're probably feeling lousy about yourself right about now. What's more, you're probably thinking that getting down on yourself for overindulging is part of the cure.

David Katz, M.D., 11/28/11

Director, Yale Prevention Research Center

Good health is perennially on the list of reasons any family has to be thankful, and food is among the most potent of influences on health. The differential effects of pizza and a mixed green salad on health don't change just because politicians play around with the lexicon.

Michael Friedman, L.M.S.W., 11/27/11

Adjunct Associate Professor, Columbia University Schools of Social Work and Public Health

For older adults, drinking too much and misusing medications are the major substance use problems, affecting as many as 20 percent of them.

Maggie MacDonald, 11/25/11

Special project coordinator, Environmental Defence

The baby shampoo formula used by Johnson & Johnson for bottles sold in Sweden, Denmark, the United Kingdom, Japan, Norway and South Africa was already free of these toxic ingredients. But Johnson & Johnson continued to sell baby shampoo with formaldehyde-releasing ingredients in Canada, the United States, Australia, China and Indonesia.

Gretchen Rubin, 11/24/11

Writer, The Happiness Project

I've been thinking a lot about my eating habits lately -- probably because the holiday season is so full of temptation. Here are some guideline to follow, whether eating in or eating out.

Eric Ding, Ph.D., 11/23/11

Nutritionist and Epidemiologist, Harvard University

I'm often asked the question, "What is the single most harmful food in our diet today?" The evidence is mounting that it is the excess consumption of sugary beverages in our diet.

Dr. Nalini Chilkov, 11/23/11

Cancer, Health, Healing & Transformation

After breast cancer treatment, many women are prescribed aromatase inhibitors to prevent recurrence of estrogen sensitive tumors. These drugs can cause joint pain that leads many women to stop using them, thus increasing their risk of a recurrence.

Jennifer Hamady, 11/23/11

Voice coach and counselor specializing in self-expression; author of "The Art of Singing"

During the holidays, when food takes center stage, I think it's wise to consider the mixed messages women (and increasingly, men) receive about eating and their bodies.

Kathy Kaehler, 11/22/11

Author, Celebrity trainer

In 1989, I had no idea what I was getting into when I answered the phone and agreed to an interview with Jane Fonda in Santa Barbara, Calif.

Matthew Edlund, M.D., 11/21/11

Director, Center for Circadian Medicine; author, 'The Power of Rest'

Combining depressants like booze and sleeping pills is a kind of personal roulette. You don't know what you'll get at the end of the day.

Penny Love Hoff, 11/21/11

Fitness/Lifestyle Coach

I'm going to diagnose myself as a sufferer of early onset seasonal affective disorder. Early onset as in early in the day. Several times this week I've had to stop myself from climbing into my pajamas at 7 p.m.