Reduce your intake of foods that are naturally high in iodine, including eggs (especially the yolks), seaweed, sushi rolls, kelp, and milk and dairy products (which you should be avoiding anyway). If you’re a fan of Japanese food, opt for sashimi instead of sushi rolls. (FYI: Not all sushi rolls contain seaweed. Sushi rolls without seaweed are OK to eat.)

Reduce your salt intake. Be thankful you weren’t born in the early 1900s. Just as vitamin D deficiency became a public health epidemic in the first part of the twentieth century (leading to the mass production of vitamin D-fortified milk), iodine deficiency -which can cause thyroid problems, goiter (swelling of the neck or larynx), and even mental retardation- became a growing health concern by the start of World War I. The solution? Mass production of iodized salt beginning in 1924.

These days, iodine deficiency isn’t really a significant health concern in the U.S., since prepared, processed, and packaged foods all contain plenty of iodine. (Developing nations, on the order hand, including India, Pakistan, Haiti, and Sudan, still report iodine deficiency in alarming numbers.) Some evidence suggests that Americans might even be at risk of consuming too much iodine, probably because we tend to eat too much salt in general.

The majority of salt, including table salt and sea salt, is iodized. Use it sparingly or opt instead for kosher salt, which is not iodized. Remember, you shouldn’t cut iodine from your diet completely, or you’ll risk some serious health complications, but reducing your salt intake can do wonders for your skin and overall health.

• Evita productos a base de leche entera, incluyendo bebidas para el desayuno como licuados, sorbetes, yogurt, queso, queso cottage, queso crema, y helados. En su lugar, compra leche de soya sin azúcar, leche de almendra, quesos de soya, y cambia la mantequilla por margarina, libre de grasas trans y de origen vegetal. Si no puedes comprometerte a hacer esto, al menos elige leche orgánica, sin grasa y lácteos del mismo tipo, ya que contienen menos hormonas vacunas (aunque de cualquier forma elevarán los andrógenos en tu cuerpo y estimularán tus glándulas productoras de aceite).
• Ten cuidado de los lácteos “escondidos”. A veces la leche y los lácteos aparecen donde menos lo esperas. Las carnes frías procesadas, por ejemplo, son una fuente común de lácteos sorpresa. También las barras de granola. Asegúrate de leer las etiquetas y evitar lácteos sólidos. Aléjate de la caseína y el suero de leche. Todo lo que tenga la etiqueta parve (un término kosher) está permitido.
• Obtén tu calcio de otra manera. Todos saben que la leche y los lácteos son una excelente fuente de calcio, así que si los estás sacando de tu dieta, tienes que tomarlo en cuenta. Un suplemento de calcio es buena opción.

As If you needed another reason to keep your blood sugar in check, research also shows that in addition to wiping out acne, eating a low glycemic diet can help you fit into your skinny jeans: In another study by those researchers at the Royal Melbourne Institute of Technology, people with acne who were placed on a low glycemic diet had clearing of the skin, lower levels of androgens in their blood, and an average weight loss of 3 pounds a week (over 12 weeks) when compared with those who are foods that were high on the glycemic index. What’s more, the research implies that these changes may happened acutely, meaning the results are evident immediately, often after just one meal.

Studies also show that if you start the day with a low glycemic breakfast, you’ll have a less dramatic blood sugar spike (and related insulin boost) at lunch, which suggests that the effects of healthy (or unhealthy) meals build up throughout the day. Start your day off right, and you’ll have stable blood sugar in the evening. But eat a croissant or a bagel (or skip breakfast altogether), and your blood sugar and insulin will be out of whack all day long.

Step 1 in avoiding breakouts is to steer clear of sugar, corn syrup, and foods that are high on the glycemic index, including the following:

• Refined grains, such as white toast, English muffins, pastries, croissants, muffins, bagels, pasta, and white rice. Instead, choose 100 percent whole grain products. You can look for the whole grain stamp or read the food label; (i.e., wheat, oat, rye). If it does not say the word whole, it isn’t a good choice. And beware of products marked multigrain. They may be made with more than one grain, but that doesn’t mean they’re made with whole grains.
• Ketchup, barbecue sauce, and pasta sauces, which are often made with corn syrup. Look for sugar-free or low sugar versions.
• Sugary sodas and sport drinks. In lieu of sugar you can sweeten beverages (and cereals) with a calorie-free sugar substitute. Or try weaning yourself off sugar gradually. For example, use just one packet of sugar in your coffee instead of two.
• Processed luncheon meats, which are often a source of hidden starches and sugars. Instead, choose fresh roasted turkey, fresh roast beef or rotisserie and grilled chicken.

For those days you’re really craving carbs, consider pairing them with protein. Studies show that eating protein and fat alongside carbohydrates (such as adding chicken to your pasta, for example) can reduce the severity of spikes in your blood sugar. Just remember that the most important factor in keeping your blood sugar balanced is still the composition of the carbohydrate. In other words, it’s good to add that chicken, but it’s much more important that your pasta be made of whole wheat.