Should You Be Gluten-Free?

I LOVE when patients ask me if they should be GLUTEN-FREE. Why? Because the gluten-free diet is inherently healthy (if you do it without searching out the elusive gluten-free twinkies) and because I have been following a GF diet for about seven years, so I have far more personal opinions and advice about this diet than your average non-GF doc.

Who NEEDS to be Gluten-Free? People with Celiac Disease. Anyone with this autoimmune disorder needs to COMPLETELY avoid gluten, which is a protein found in wheat, barley and rye. If they do eat gluten, their body basically overreacts and the inflammatory response in their gut damages the gut lining, which blocks absorption of important minerals and vitamins. Untreated celiac disease can lead to multiple complications, including anemia, a skin disorder called dermatitis herpetiformis, autoimmune disorders, neurological problems and some cancers.

Who MIGHT be helped from a gluten-free diet? People with autoimmune disorders. Gluten is pro-inflammatory, which means that it can stir up an overactive immune system by irritating the gut lining and triggering a whole body response, sort of poking the giant. With autoimmune diseases, the problem comes from too much immune response (too much inflammation) creating swollen joints, rashes, etc. The general concept is that if you remove gluten, that is one less thing to provoke your overactive system.

My most important advice about the GF diet: emphasize the natural foods that are gluten free- fruits, vegetables and protein sources (nuts, meats, fish, eggs, etc). If all you do is substitute the GF version of every bread, pasta, pizza, cookie, cake and twinkie for those things in your diet now, then yes, you will be GF but not necessarily healthy. And from the mental/emotional aspect, sometimes that's the easiest way to start GF without feeling deprived. But why not have those GF alternatives in moderation, while emphasizing the healthy wonder that is the colorful world of veggies and fruits? Your body will thank you for it.

Do I still seek out the best GF treats like pizza, calamari and brownies? You bet! Am I excited to find Udi's newest delicious GF multigrain bread? Of course! But my dietary GOAL remains focusing on more vegetables and fruits, always paired with a protein source.

BOTTOM LINE: Gluten-free diets are necessary for people with celiac disease, probably good for those with autoimmune disorders, and healthy for all of us as long as we "go natural". 

Sunscreen 101

See that shot glass? BURN that image into your memory, because believe it or not, that's how much you should use every time you apply sunscreen! What else do you need to know? Here's my Sunscreen 101.

Let's start with SPF. What does it mean? Sun Protection Factor is a measure of a sunscreen's ability to protect the wearer against UV radiation from UVB. Note that the sun produces both UVA and UVB, and BOTH cause damage that can lead to skin cancers. Right now, though, the SPF only addresses the UVB protection. So, SPF means that compared to bare skin, the sunscreen keeps you from burning X times longer. If it takes you a half hour to turn red with bare skin, a sunscreen with an SPF of 30 should in theory keep you from burning 30 times longer, which would be 900 minutes- 15 hours. Unfortunately, no sunscreen stays fully effective beyond two hours without re-application. Additionally, sunscreens with an SPF of 15 block roughly 93% of UVB rays, SPF 30 ~ 97%, and SPF 50 is 98%. Therefore, even with perfect application, no sunscreen blocks all UVB rays, and many block no UVA rays.

How much should you use to be effective? See above- an OUNCE of prevention here for sure, and that same amount should be REAPPLIED every two hours. This means you will use roughly half of an 8 ounce bottle on ONE PERSON during a full day outdoors. (And no, I don't own stock or have financial interests in sunscreens.)

Which ingredients are important? Most dermatologists recommend combining the physical barrier ingredients that protect against the deep penetrating UVA rays, such as ZINC OXIDE and TITANIUM DIOXIDE (the ones that leave the white residue) along with the chemical barrier agents known to block UVBs, such as PABA, salicylates, cinnamates and benzophenones. Since nearly all sunscreens contain mixes of the chemical barriers, I scan the ingredients to be sure it also contains zinc oxide or titanium dioxide. Note that some people are sensitive to PABA or other ingredients, and may do best with purely barrier sunscreens and clothing (such as surf shirts.) Ask your doctor for more specifics if you are concerned about allergens.

Easy Sprays...NOT my first choice. Why? Few have either zinc oxide or titanium dioxide, and those that do are very expensive and have these minerals broken down into "nanoparticles" to allow them to be in a light enough liquid to spray. In the medical literature, some debate exists as to whether these nano-sized minerals can potentially cause cancer, which is of course, the opposite of our intent. Regardless of these issues, probably the biggest issue with sprays is that people use TINY portions- picture that less than 10 second total body spray- and so they are not obtaining anywhere near the listed SPF. Would I prefer that over skipping sunscreen all together? Yes...which means I do keep some on hand.

What do I usually buy? Our family's current favorites are Banana Boat's Sport or "Baby" lotions. To sunscreen's credit, my kids complain that their skin is "way too white" because I never let them tan. I take that as a compliment! Probably more importantly, for extended sun exposure we all use swim shirts, and try to consistently wear hats and sunglasses.

BOTTOM LINE: Get a sunscreen that contains both chemical and barrier agents (think titanium dioxide) and realize an 8 oz tube should be used up by a family of four in ONE morning OR afternoon since each person needs ONE OZ every TWO HOURS.