As a clinician who works with weight loss and obesity, I can tell you with certainty that people can and do become weight loss resistant and can develop some degree of “metabolic damage”. Metabolic damage is a non-diagnostic term many in the weight loss industry use to describe a set of functional disturbances. These disturbances include severe metabolic compensations that result in a depressed metabolic rate, chronic fatigue, immune suppression, and multiple hormonal effects (i.e. suppressed thyroid function, adrenal stress maladaptation, and loss of libido and/or menses).
You will work with your provider to come up with a treatment plan. It may include only the lifestyle changes. These changes, such as heart-healthy eating and exercise, can be very effective. But sometimes the changes do not control or lower your high blood pressure. Then you may need to take medicine. There are different types of blood pressure medicines. Some people need to take more than one type.
Resistant hypertension is defined as high blood pressure that remains above a target level, in spite of being prescribed three or more antihypertensive drugs simultaneously with different mechanisms of action.[131] Failing to take the prescribed drugs, is an important cause of resistant hypertension.[132] Resistant hypertension may also result from chronically high activity of the autonomic nervous system, an effect known as "neurogenic hypertension".[133] Electrical therapies that stimulate the baroreflex are being studied as an option for lowering blood pressure in people in this situation.[134]
Metabolic syndrome promotes coronary heart disease through several mechanisms. It increases the thrombogenicity of circulating blood, in part by raising plasminogen activator type 1 and adipokine levels, and it causes endothelial dysfunction. [14] Metabolic syndrome may also increase cardiovascular risks by increasing arterial stiffness. [15] Additional mechanisms include oxidative stress, [16] which has been associated with numerous components of metabolic syndrome. [17]
^ Jump up to: a b Go, AS; Bauman, M; King, SM; Fonarow, GC; Lawrence, W; Williams, KA; Sanchez, E (15 November 2013). "An Effective Approach to High Blood Pressure Control: A Science Advisory From the American Heart Association, the American College of Cardiology, and the Centers for Disease Control and Prevention". Hypertension. 63 (4): 878–85. doi:10.1161/HYP.0000000000000003. PMID 24243703. Archived from the original on 20 November 2013. Retrieved 20 November 2013.
Potassium – as part of the electrolyte panel, which also includes sodium, chloride, and carbon dioxide (CO2); to evaluate and monitor the balance of the body's electrolytes. For example, low potassium can be seen in Cushing syndrome and Conn syndrome, two causes of secondary hypertension. Some high blood pressure medications can upset electrolyte balance by causing excessive loss of potassium or potassium retention.

“Individual responses to different diets–from low fat and vegan to low carb and paleo–vary enormously. “Some people on a diet program lose 60 lb. and keep it off for two years, and other people follow the same program religiously, and they gain 5 lb.,” says Frank Sacks, a leading weight-loss researcher and professor of cardiovascular disease prevention at the Harvard T.H. Chan School of Public Health. “If we can figure out why, the potential to help people will be huge.”
The AHA/ASA recommends a diet that is low in sodium, is high in potassium, and promotes the consumption of fruits, vegetables, and low-fat dairy products for reducing BP and lowering the risk of stroke. Other recommendations include increasing physical activity (30 minutes or more of moderate intensity activity on a daily basis) and losing weight (for overweight and obese persons).