When it comes to the risks of being obese, doctors have to check your health history, whether it be looking at the weight history or weight loss efforts, physical activity and exercise habits, eating patterns and appetite control, what other conditions you’ve had, medications, stress levels, and other issues about your health. Doctors may also review your family’s health history to see if you may be predisposed to certain conditions. This also include body examination, to check on the BMI (Body Mass Index). IF the BMI is at 30 or higher (https://www.mayoclinic.org/diseases-conditions/obesity/diagnosis-treatment/drc-20375749), then that would be considered obese. If there are known health problems with the person’s health history, the doctor will evaluate them.

A nutritional deficiency occurs when the body doesn’t absorb or get from food the necessary amount of a nutrient. Deficiencies can lead to a variety of health problems. A person’s metabolism can be different from others since metabolism is what converts the food you eat into energy but since everyone has a different rate, foods aren’t always absorbing nutrients and with the amount of food a person is consuming not all of that is being converted to energy. A person with a “low” (or slow) metabolism will burn fewer calories at rest and during activity and therefore has to eat less to avoid becoming overweight. (https://www.health.harvard.edu/diet-and-weight-loss/does-metabolism-matter-in-weight-loss)

Essentially any food that is highly processed, high in calories and low in nutrients. Junk food is also usually high in added sugars, salt and saturated or trans fats. Some evidence points to junk foods as being as addictive as alcohol and drugs. the fat overload can cause your gut to produce neurohormones that make your brain react more slowly. Also from my experience with fast processed food, I’ve experienced being fatigue after a heavy meal which contained ‘junk food’, anything that is saturated with lots of fats and the consumption of it.

(https://www.menshealth.com/health/a19521568/fat-and-sleepiness-risk/#:~:text=Eat%20a%20diet%20like%20this,after%20eating%20it%2C%20she%20says.)