If you want to add more vigor to your life and even extend your “expiration date,” you have to maintain a healthy body weight. Fortunately, there are plant-based compounds that can help you get your weight down and your energy up naturally. That’s good news since, according to the latest CDC data, 42.4 percent of U.S. adults are medically obese, an alarming public health trend that has seen weight problems rising since the mid-20th century. Factors such as the proliferation of processed foods, an increasingly sedentary lifestyle, environmental chemicals, and larger portions on bigger plates have colluded in a perfect storm to cause obesity rates to more than triple in the last six decades. Obesity is not a mere cosmetic concern; it’s a complex medical problem that increases your risks for serious health issues such as diabetes, heart disease, high blood pressure, and certain cancers. While some weight problems are linked …