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By Dr. Madelyn Fernstrom Grapefruits are one of nature’s perfect fruits – low in sugar, rich in fiber, and a great source of vitamin C. But this fruit also contains a compound that can interfere with the activity of some prescription medications. A new study published this week in the Canadian Medical Association Journal reveals that the number of these drugs has significantly increased over the past few years. Researchers estimate that there are 43 drugs (26 having been introduced to the market in the past 4 years) that have been shown to cause serious harm in susceptible individuals when mixed with grapefruit. There are three major categories of drugs that can have serious negative effects when combined with grapefruit: - Cholesterol lowering statins - Some heart drugs, like beta-blockers - Some antibiotics While food and drug interactions are printed on every label and stated on package inserts, many people do not take these warnings seriously.  The best step is to talk wit...

By Dr. Madelyn Fernstrom PepsiCo has just launched a new soda in Japan, claiming to burn fat and support weight loss. It’s called “Pepsi Special” and the “special weight loss ingredient” is the addition of dextrin to the standard Pepsi formula. Dextrin is a non-digestible fiber, used in baked goods and other food products. Scientific studies have documented that fiber can help bind small amounts of dietary fat, and this metabolic observation is the sole “science” upon which this claim is based. Americans have a love-hate relationship with soda, and soda consumers are always happy to hear of some redeeming health benefit that helps justify consumption. This is not the first time soda has made a weight loss claim. In the U.S., you might be familiar with a soda named “Celcius” containing 200 mg of caffeine (the amount in a large mug of coffee) claiming to burn fat and raise metabolism. And Coca Cola’s Fuze Slenderize energy drink, containing a special blend of minerals, promises to help ...

By Dr. Madelyn Fernstrom You might be surprised to hear that the day after Thanksgiving can be a big barrier for many people when it comes to sticking with a healthy lifestyle over the holidays. This is the day most people make the decision to indulge smartly and adjust their eating and activity patterns to adapt to the culinary treats of the season, or disconnect from mindful eating until January and “worry about it later.” The first step in this decision starts with what I call “eater’s remorse” – feeling bad about your overindulgences of the previous day. It’s easy to get stuck in the mindset that you’ve gotten off track, and there’s no hope for your diet, so why not just keep eating until New Year’s Day.  Today is the day to adjust your thinking for weight control success. No more guilt!  Thanksgiving is just one day of eating, even if you’ve eaten way more than you intended. Don’t feel guilty about your past eating. Learn from your eating behavior, to see how you c...

By Dr. Madelyn Fernstrom Today I’d like to share some interesting facts about turkey in honor of the day most often associated with eating this bird – Thanksgiving! Here’s a list of my favorites: Nearly 95% of Americans eat turkey on Thanksgiving. That translates to 45 million birds! Turkey has more protein, ounce per ounce, than chicken or beef. White meat and dark meat turkey have almost the same number of calories per serving. Dark meat has four calories more per ounce, or 24 calories in a six-ounce serving A 15-pound turkey has 70% white meat and 30% dark meat. Eating turkey does not put you to sleep. While the old wives’ tale about the sleep-promoting effects of tryptophan-containing turkey remains active, it’s not true. The metabolic explanation is that the large caloric load consumed with the Thanksgiving meal drives more energy to the digestive tract, often causing drowsiness. Benjamin Franklin originally proposed the turkey as the official bird of the United States, instead ...

By Dr. Madelyn Fernstrom If you’ve lost and gained the same 20 (or 30, 40, 50+ pounds) for years and believe that you’ve “wrecked” your metabolism and can’t maintain successful long term weight loss, there’s very good news for you! A recent article in the scientific journal Metabolism followed more than 400 women for one year. About 40% of the participants classified themselves as “weight cyclers,” defined as losing (and regaining) at least 10 to 20 pounds at least three times. Participants were assigned to one of four treatment groups: (1) reduced calorie diet only; (2) reduced calorie diet plus exercise plan; (3) exercise plan alone; (4) no intervention, served as the comparison group.  Now here’s the good news! There was no significant difference for the total amount of weight lost between women who were yo-yo dieters and those who weren’t. That’s a reassuring message for the millions of women (and men) who feel their efforts are sabotaged by their past weight cycling history....

By Dr. Madelyn Fernstrom You might have seen advertisements or read magazine articles and health books touting the health benefits of coconut oil. We’re often led to believe that there is a new health secret to using this oil – that adding it to your diet is definitely a good choice. But what’s the truth about coconut oil?  Coconut oil is a vegetable fat - it comes from a coconut after all. But unlike most vegetable fats, coconut oil has a lot of saturated (artery clogging) fat. The saturated fat in coconut oil is no different from any other saturated fat and it raises the “bad” LDL cholesterol (think “L” for Lousy). But coconut oil is different from other saturated fats because it also raises the “good” HDL cholesterol (think “H” for healthy). It’s not really clear what impact coconut oil has on overall heart health because studies show that it raises both good and bad cholesterol. So is it healthy? I’d stick with the other vegetable oils like soybean, canola, or olive that do n...

By Dr. Madelyn Fernstrom When it comes to food, when we hear the word “salt,” most of us automatically think about sodium. The emphasis on lowering sodium intake to promote heart health is important and well documented.  But there’s another important salt in the dietary picture: potassium. Getting the right balance of sodium and potassium is another key component for heart health. According to a recent study published in the American Journal of Clinical Nutrition , 90% of a group of of 12,500 people consumed more than 2,300 mg of sodium daily, the upper limit from the American Heart Association (AHA). While sodium intake was up, potassium intake was down. This group consumed only about half of the AHA recommendation of 4,700 mg/day per day. How does this finding translate into what you should eat? Because nearly three quarters of daily sodium intake comes from the consumption of processed foods (food contained in boxes, cans, and bags), cutting back on these items can drastically...

By Dr. Madelyn Fernstrom Three cheers to the American Academy of Dermatology for designating November as “National Healthy Skin Month.” This makes a lot of sense since November brings the arrival of colder, drier air as the winter months approach. Their main goal is to raise awareness of healthy skin care throughout the year, as well as provide some specific tips for protecting your skin all winter long.  Keeping your skin hydrated and protected isn’t just important to reducing the visible signs of aging, it’s also a preventive measure for avoiding long-term skin damage. Follow these five easy steps for a healthy skin year-round! - Wear sunscreen. You know by now that I’m a big advocate of year-round sun screen. Cloudy and cold conditions do not block the rays of the sun, although the heat is less intense in winter. Remember to coat the skin on your hands (unless you’re wearing gloves) and your lips to avoid chapping. - Use milder soaps and scrub lightly. Washing the skin removes n...

By Dr. Madelyn Fernstrom For those of you who skimp on sleep because of “too much to do,” this weekend is meant for you. It’s the end of daylight savings time, and we turn our clocks back one hour at 2 a.m. Sunday morning. It’s time to “fall back” and gain an extra hour! While you might be tempted to pack more activity into this extra hour, how about using that time for an extra hour of sleep? Many people tell me they can’t make the time to sleep 7-8 hours every night. With our busy lives, sleep is often at the bottom of the “to do” list. Lack of adequate sleep is increasingly becoming a risk factor for our long term health. Chronic lack of sleep is associated with weight gain, hormonal shifts, mood changes, and lack of work productivity. One extra hour won’t make up for weeks and months of inadequate sleep, but it’s a start. It’s a big step for increasing personal mindfulness of your own sleep schedule. Pleasant dreams!