When you eat foods high in carbohydrates and fat, your body naturally produces glucose. Carbohydrates are the easiest thing for the body to process, and therefore it will use them first – resulting in the excess fats to be stored immediately. In turn, this causes weight gain and health problems that are associated with high fat, high carbohydrate diets (NOT keto).
As far as the Ketogenic Diet is concerned, I think I am going to have to make a full about-face. As you said, for some people like yourself, you were unable to eat in moderation and feel it is due to your genetic makeup. This is probably true…to add insult to injury, in addition to genetics, it could also be an inflammatory process going on due to the sugary drinks and processed foods we are eating causing obesity and a host of other issues.
According to the official DASH Diet Weight Loss Solution page, this eating plan actually turbocharges the original DASH diet by further reducing added sugars, refined grains, and heavily-processed foods. It also includes some specific guidelines for weight loss, such as making colorful vegetables the center of your meals and adding fresh fruits to your plate whenever you get a craving for sweets.
My pick for the healthiest meal plan for diabetes? My favorite is the Mediterranean Diet. It’s high in fiber, low in saturated fats and includes no processed foods which is the challenge for all of us at this point in history. If we could all eat like they do in Italy and Greece! Think of Sicily and the coasts of Greece where their diet consists of fresh fish, fresh fruits and vegetables, nuts, beans, seeds, olives and olive oil, lean meats such as chicken and pork, some eggs and little red meat. The American Heart Association recommends it as well as the American Diabetes Association as being one healthy diet choice for people with diabetes.
At the conclusion of the intervention, both groups had improved in all metrics but “these changes were more significant in subjects who were on the LCKD as compared with those on the LCD.” . As a result, the researchers supported the study outlined above and concluded that their “…study shows the beneficial effects of a ketogenic diet over the conventional LCD in obese diabetic subjects.” 
"Those with type 1 diabetes should avoid a ketogenic diet," warns Joseph Galati, MD, a hepatologist at the Liver Specialists of Texas in Houston, "Many patients with type 1 diabetes have some degree of renal impairment, and handling the build-up of ketones and acids in the body may cause too much stress on the kidneys. Of course, any pregnant women with diabetes, especially those requiring insulin should avoid such an extreme diet given the low glucose levels will be a constant [health] threat."
“I think the caution with a low-carbohydrate diet is the idea that it’s very restrictive,” Zeratsky says. “When you start getting into the very low carbohydrates, when you’re talking about 20 grams, which for some people would be a cup of [starchy] vegetables. … If there is someone who is interested in it, it’s very important they understand what a low carbohydrate diet means in a practical sense.”
Stephen Colbert may be on to something. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for 12-weeks. The only difference between the groups was what they were given to eat as an afternoon snack. One group ate 220-calories of pretzels while the other group munched on 240-calories worth of pistachios. Just four weeks into the study, the pistachio group had reduced their BMI by a point, while the pretzel-eating group stayed the same, and their cholesterol and triglyceride levels showed improvements as well.
Unlike other weight-loss plans, the DASH Diet Weight-Loss Solution plan does not involve counting calories. Even better? Thanks to the book The Dash Diet Weight Loss Solution: 2 Weeks to Drop Pounds, Boost Metabolism, and Get Healthy ($14.24, Amazon), all the hard work has basically been done for you. The plan comes with 28 days of meal plans and more than 45 recipes you can make. Accompanying this plan is the cookbook The Everyday DASH Diet Cookbook: Over 150 Fresh and Delicious Recipes to Speed Weight Loss, Lower Blood Pressure, and Prevent Diabetes ($13.77, Amazon), which is there to give you a helping hand along the way if you're stumped on recipes.
Researchers at Florida State University studied watermelon for its ability to regulate blood pressure due to it being “one of the richest natural sources of L-citrulline”, an amino acid that the body converts into L-arginine, which improves circulation. They discovered that watermelon, due to its high L-citrulline, may prevent pre-hypertension from becoming full blown hypertension.
Spinach is a great source of iron, which is a key component in red blood cells that fuel our muscles with oxygen for energy. But researchers in Sweden identified another way in which these greens might keep you charged: Compounds found in spinach actually increase the efficiency of our mitochondria, the energy-producing factories inside our cells. That means eating a cup of cooked spinach a day may give you more lasting power on the elliptical machine (or in your daily sprint to catch the bus).
Perhaps the biggest thing that holds people back from following DASH is approaching it with an “all-or-nothing” attitude. However, DASH does not fall under the common “diet” approach of following an eating plan for a few weeks and then returning to your old way of eating. After all, no one’s diet is perfect. Like the Mediterranean Diet, the DASH diet is best viewed as a healthy way of living and eating. Making small, gradual changes in your food choices—and food quality—can help you form healthier habits for life.
If you’ve decided to move forward in trying the keto diet, you will want to stick to the parameters of the eating plan. Roughly 60 to 80 percent of your calories will come from fats. That means you’ll eat meats, fats, and oils, and a very limited amount of nonstarchy vegetables, she says. (This is different from a traditional low-carb diet, as even fewer carbs are allowed on the keto diet.)