In this issue: Snack attacks, herbal sleep aids, virtual colonoscopies, workout injuries and more.

Snack attack: Find creative ways to satisfy hunger. Manage my newsletter.   HOUSECALL Mayo Clinic named America's #1 Best Hospital by U.S. News & World Report Vol. 16, Issue 23 | March 19, 2015   THIS WEEK'S TOP STORIES     Snacks: How they fit into your weight-loss plan Snacks don't have to be a guilty pleasure. Discover creative ways to satisfy your hunger without sabotaging your weight-loss plan.     Overuse injury: How to prevent training injuries   Milder temperatures may encourage you to get outside and start exercising. Try these tips to stay injury-free.           EXPERT ANSWERS   Valerian: A safe and effective herbal sleep aid? If you have insomnia and are thinking about taking a valerian supplement to catch some z's, here are some things to consider. Food allergy vs. food intolerance: What's the difference? A food intolerance can cause some of the same signs as a food allergy, so people often confuse the two.   PLUS ADDITIONAL HIGHLIGHTS ... Metabolic syndrome Virtual colonoscopy Corneal abrasion (scratch): First aid Slide show: 5 vegetable main dishes     TRUSTED HEALTH TOOLS   Use our Symptom Checker to explore possible causes of your symptoms based upon Mayo Clinic's patient care experience.   Use these simple calculators and self-assessments for personalized health tips.   Mayo Clinic healthy weight pyramid Calorie calculator     NOW BLOGGING   Pregnancy and you: Listeria during pregnancy: Cause for concern? Worried about listeria during pregnancy? A Mayo Clinic specialist helps put the risk in perspective.     MAYO CLINIC PRODUCTS & SERVICES   Reliable information for a healthier life Great news! Start a healthier you with a trial issue of Mayo Clinic Health Letter. As an added bonus, we'll send you a complimentary special report on arthritis. Get started now!     HEALTHY RECIPES   Sweet carrots Wild rice pilaf with cranberries and apples Pork medallions with five-spice powder Salad greens with pears, fennel and walnuts   HEALTH TIP OF THE WEEK   No pain, no gain? No way! When it comes to exercise, the "No pain, no gain" mantra is bad advice. Exercise shouldn't hurt. At most, you may feel a little muscle soreness when you do a new workout or activity. If you feel pain during exercise (or dizziness, nausea or shortness of breath), stop. You may be pushing yourself too hard.   Need practical advice on diet and exercise? Want creative solutions for stress and other lifestyle issues? Discover even more healthy lifestyle topics at MayoClinic.org.   Mayo Clinic is a not-for-profit organization. Proceeds from website advertising help support our mission. Mayo Clinic does not endorse any non-Mayo products and services. Advertising & Sponsorship Policy    |    Opportunities     Did you know? Mayo Clinic is a not-for-profit medical institution dedicated to patient care, education and medical research. Proceeds from advertising and the sale of Mayo Clinic books and newsletters support Mayo Clinic's mission. Share our passion for science and health. Please consider a gift to Mayo Clinic. Click here to donate.     Connect with Mayo Clinic For more of our reliable health information and tools, visit us at MayoClinic.org. Or add us to your social network!   Like us on Facebook Follow on Twitter Follow on Pinterest   Watch on YouTube Patient Stories View More Newsletters       Thanks for joining our mailing list, dr.samah.saied.ahmed@gmail.com, for Mayo Clinic HOUSECALL.   REMOVE me from this list | Add me to this list | Customer service   © 2015 Mayo Foundation for Medical Education and Research, 200 First Street SW, Rochester, MN 55905. All rights reserved.