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    Exceptions to 5 common health rules

    No one ever got sick from avoiding cigarettes or trans fats. But some of the most commonly repeated pieces of advice actually aren't meant for everyone. After all, the USDA couldn't equip its pyramid with a section just for people with celiac disease or those taking certain meds. Health recommendations are sometimes based on studies that didn't include a good cross section of the general public. So we took a look at some pieces of conventional wisdom that are truly wise for most people and asked the experts what you ought to do, just in case you're not completely average in every way.

    1. Swimming is ideal low-impact cardio

    Tailor it: if you have asthma

    The chlorine in a pool-even if it's outdoors-can trigger an attack. In children, it may even raise the odds of developing the disorder in the first place. To be on the safe side, find a different form of exercise if you have asthma that flares up poolside, experts say; if you have a child under age 7 with allergies, don't take him to a pool with a strong smell of chlorine.

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    2. Eat plenty of leafy green vegetables

    Tailor it: if you take the blood thinner warfarin (Coumadin)

    This drug prevents dangerous blood clots by blocking the action of vitamin K, which is needed to make clot-building compounds in the blood-but too much K in your diet can overwhelm your protection. The nutrient is especially abundant in dark green, leafy vegetables such as spinach, Swiss chard, and kale, so don't have more than one serving of any of these in a day.

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    3. Drink at least 8 glasses of water every day

    Tailor it: if you have any bladder issues

    You might be able to avoid leaks by cutting back a bit on fluids. Ask your doctor how much you should drink each day-and don't worry if it doesn't come close to the magical "8 glass" rule. Nearly 20% of your water intake comes from food anyway, according to the National Health and Nutrition Examination Survey.

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    4. Acetaminophen is the safest pain med

    Tailor it: if you have a glass of wine (or any alcohol) daily

    It's well-known that acetaminophen can damage the liver in high doses, especially in heavy drinkers. But even light drinking can prime the liver for trouble, says Donald Jensen, MD, a medical advisor for the American Liver Foundation. Although 3,900 mg of acetaminophen is the recommended maximum daily dose, you shouldn't exceed 2,000 mg on any day you have even one drink.

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    5. Get nutrients from whole foods, not pills

    Tailor it: if you're a strict vegetarian

    If you don't eat eggs or drink milk, you may need supplements to get enough vitamins B12 and D. Try 6 mcg of B12 (the amount in a typical multi). The current recommendation for vitamin D is 200 to 600 IU, depending on your age, but researchers say that needs an update: 1,000 to 2,000 IU is optimal and safe to take. And although you can get plenty of iron through a vegetarian diet, it takes planning.

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    [photo credit: Getty Images]

     

    160 comments

    • Mariam  •  2 years 1 month ago
      Thank you. You've pointed out good and helpful things. But I noticed that you used him to describe a child under asthma. Hmm, well, what if it's a her? Please do not do that. We're in the 21st century. Men are not better. We've gotten past writing him to describe people. Thank you.
    • TheBeast  •  2 years 1 month ago
      Okay, number one there's only one way to get passed asthema. That's get your ass out there and exercise. You're gonna have asthema attacks sooner or later. The more you get, the better you will become. Don't be scurred, you'll survive.
    • Stacey  •  2 years 1 month ago
      Does anyone know that the active ingredient in Coumadin is the same active ingredient in rat poison, just in a smaller dose. Then we are suggesting that they eat a less healthy diet...this is what most likely put them on Coumadin to begin with.
    • Joy in Seattle  •  2 years 1 month ago
      A note on #4: no pain med is completely safe

      They all have side effects, have interactions with foods or other drugs, and can cause damage over long periods of use. It isn't that they should be completely avoided, but we tend to reach for them over every cold, headache, or soreness without thinking. We don't think.
    • DudesWest  •  2 years 1 month ago
      The "eight glasses of water a day" is a myth. There is no research backing it up, as was determined by someone from Penn State about 10 years ago.
    • MidiMagic  •  2 years 1 month ago
      Tailor all of those if you have allergies. If you are allergic to sources of calcium and vitamin D, you have to supplement.
    • RafiqD  •  2 years 1 month ago
      I appreciate such readings and obsevation as these are useful to good living and wellness. Thanks.
    • -  •  2 years 1 month ago
      a note for tip #5. Stop being a wussy. There's nothing wrong being an omnivore (meaning eating both veggies and meats) It's different if you are allergic or there's a medical reason to avoid meats but if you're doing it by choice then there's no excuse for not getting all the nutrients you need, popping pills (or vitamins) really isn't the way to go either as it's not a safer alternative.
    • Sheila  •  2 years 1 month ago
      Good article: Another factor relative to eating green leafy vegatables (salad greens) is that if grown in areas watered by the Colorado River (as most are) may contain excessive amounts of perchlorate. Women, especially if nursing or pregnant should avoid perchlorates in the diet as their body burden is already half the safe limit. FDA has surveyed 500 foods for their perchlorate content.
    • Audrey M  •  2 years 1 month ago
      Vegetarians EAT milk and eggs! Vegans are the ones who don't eat any animal products at all, vegetarians don't eat animals and fish-big difference! How can you make such a huge mistake, did you fact check any of this article?
    • TDr  •  2 years 1 month ago
      when one talks about Vitamin D, when should mention the true Vitamin D, it is called D3, the kind your body makes from sun.
    • QM  •  2 years 1 month ago
      i agree with cranberry, if youve been eating a ton of green leafy veggies before starting coumadin (warfarin), do not alter your diet. your body is used to that much vitamin k and that could mess up your levels of the drug in your body. if you never eat green leafy veggies then 1 serving is okay. just dont change your diet, most importantly.
    • Nick  •  2 years 1 month ago
      This is the dumbest article I've read in a while... There are certain conditions that make anything in the world unsafe to do; if you have one of these conditions you need to learn about it, not hope that an article comes along on yahoo and warns you that "This healthy habit might not be healthy if you have..." What a waste of space.
    • Moonshine  •  2 years 1 month ago
      Dr Julie, My husband and I radically changed our diets when he had a melanoma on his ear. He did some internet research and found out that cancer thrives in an acidic body. We bought pH strips, became plant-based in our diet (some dairy and minimal meat) and his cancer went away. The doctor didn't want to give him credit for it. My point to your post is there ARE nutritious foods available to us - just not in the fast food restaurants and aisles at the grocery stores that are 90% junk food. We don't buy processed foods and we are able to find many organic products at our local store. He lost 30 pounds and me 20 in 6 months on top of it. Say NO to pharmaceuticals and take control of your own health, people! Most doctors in this country have very little education on nutrition.
    • Prometheus  •  2 years 1 month ago
      Re.#5, Get Nutrients from Foods, Not Pills: it is virtually impossible for the body to get all the nutrition it requires from today's food. The soil has been depleted due to over farming, beef and chicken and even shrimp are fed corn (elevated omega-6), people spend less time outdoors and don't get enough vitamin D, and most of us just don't eat the right foods. Conclusion: we must take supplements--naturally derived (not chemicals)--if we are to stay healthy.
    • Whatever  •  2 years 1 month ago
      Instead of advising raging alcoholics not to take Tyelenol, shouldn't they be advised to stop drinking? Tylenol isn't perfect, but it's safer than alcohol. I get the point they are trying to make, but that just sort of jumped out at me.
    • Slick  •  2 years 1 month ago
      Thank you for posting the B12 need for vegetarians! I've been telling people who are vegans that they risk brain damage if they don't take vitamins because the brain needs B12, and it's only found in animal products. Some of them told me I was nuts. Well, given enough time, YOU'LL be the one who's nuts!
    • Cranberry Lips  •  2 years 1 month ago
      Actually, people who start taking Coumadin should not alter their diets at all. If they ate a bunch of leafy greens in the past, they should continue eating them and not cut down. If they didn't eat them before starting this therapy, they shouldn't start. Altering your diet while on Coumadin can either cause dangerously high levels of anticoagulation or dangerously low levels.
    • Natasha  •  2 years 1 month ago
      I fall under the 'strict vegetarian' catagory. I've been looking EVERYWHERE for a great multivitamin designed for Vegetarians and Vegans, and I can't find one ANYWHERE!
    • kaliluna  •  2 years 1 month ago
      Natasha, when I was a vegetarian I took Schiff's Vegetarian Multiple vitamins (even my friend, who was super strict about being a vegetarian and then vegan took them). You should be able at least to find the brand at most drugstores, if not the vitamin itself.
      http://www.schiffvitamins.com/product_detail.asp?id=9

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