Thanks to its flexibility, easy-to-understand system, and group support, Weight Watchers came out way (weigh?) ahead, winning "best weight loss," "best fast weight loss," and "best commercial diet" in the U.S. News & World Report rankings. (Oprah's endorsement probably didn't hurt either!) They recently revamped their signature plan to include "free" foods like chicken breasts and fresh produce so you'll never feel hungry even while dropping pounds. In addition, their app makes tracking your food a piece of cake—which you're totally allowed to have on the program, by the way. (Even better news: Research supports the fact that Weight Watchers is one of the best weight-loss diets.)
Many diet plans cut out entire food groups, which can create nutrient deficiencies as well as health problems. For instance, if the diet is very low in carbohydrates and you have type 1 diabetes or type 2 diabetes, it’s probably not a good fit. And if it’s too restrictive and you’re pregnant or breastfeeding, it’s not a good idea, either. Keep in mind that pregnancy is not a time for weight loss. Speak with your doctor before making any changes to your diet if you are pregnant or breast-feeding.
Although some studies have indicated that a ketogenic diet is associated with dyslipidemia (cholesterol and triglyceride perturbations), many of these results were obtained from studies on rodents and did not always agree with what the data show in human studies. A recent review summarized the controversy, highlighting the discrepancies in the literature. In part, the discordance is likely due to the exact composition of the diet, specific study design, as well as the metabolic differences between rodents and humans.
In nature, historically, there were very few ways to store carbs – which were available only for a short time seasonally. The solution to this is that when eating the available fruit in the autumn the sugars switch off the fat burning system and then use insulin to store the sugars as body fat. Carbs signal our body to go into fat storage mode. When the carbs run out then slowly the fat burning more resumes – first of all feeding ketones to the brain and other vital organs and then eventually to the muscles.
Still, the headlines keep coming. Men’s Health declared, “Ketogenic Diet Side Effects: How the Trendy Low-Carb Diet Can Give You Acne.” The health and fitness website Livestrong.com warned about “The Ketogenic Diet and Insomnia.” Other articles raised fears of bloat and constipation or cautioned that the regimen requires inhuman willpower from its followers.
A ketogenic diet helps control blood sugar levels. It is excellent for managing type 2 diabetes, sometimes even leading to complete reversal of the disease. This has been proven in studies. It makes perfect sense since keto lowers blood-sugar levels, reduces the need of medications and reduces the potentially negative impact of high insulin levels.