A lot of factors can cause this to happen, like genetics, overeating, and as people age; the metabolism slows down making it harder than ever before to burn the calories that was just consumed.
The rate that a person loses weight is commensurate to how it's gained. Fast weight loss is not suggested since it leaves the person with lose skin, and the only way to get rid of that extra skin would be surgery.
Weight loss depends on the condition of the person, which includes weight, gender, lifestyle, health, calorie-intake, age, stress level and routine.
Being overweight doesn't necessarily make a person unhealthy, it just makes the person a little bit unfashionable. Studies have shown that people who are just a little bit overweight live longer than those who have normal weight.
There's no quick or overnight solution for fast weight loss.
Nutritionists and other health experts will say that a person's weight, with proper exercise, can actually help you lose a certain number of pounds per week. The best way to lose weight this is with a low calorie diet and an exercise plan.
The first thing you need to do is to choose a diet program made by a dietitian or another health professional. The patient needs to be evaluated before any program can be made. The program usually contains an eating plan, and an exercise program that doesn't require the use of supplements or one to purchase any expensive fitness equipment. Running around the block a few times each day is way cheaper than buying a $5,000 treadmill!!
The best exercise plan should contain both cardiovascular and weight training exercises. This helps you burn calories and increase the muscle to fat ratio that will increase your metabolism and then lose weight.
A good diet needs to have food from all off the food groups.
This is made up by 2 things. The first is carbohydrates. Food that a person consumes needs vitamins, minerals and fiber. A lot of this can come from rice, potatoes, oats, and cereals. The best still come from vegetables and fruits since these have phytochemicals, enzymes, and micronutrients that are required for a healthy diet.
The second is fat which can come from mono and poly saturated food sources instead of coming from animal fats. Because fat has more than double the number of calories in food, this should be taken in small quantities to lose weight.
All diet plans are designed to make the person induce reduced amount of calories into the body. This doesn't mean that the person needs to eat less. It just means that one has to eat smart by choosing the foods that have less calories. This makes it possible for someone to lose weight without the need to eat less.
During the course of the program, the person should still consult with their doctor and other health experts to monitor their progress. There will be times that it's essential to modify their diet plan to have further lose weight.
It's up to the person already to stick to the program to see that it works, instead of giving up one week in to the program. You will never see success over night. It takes time. Just like it took time to gain that extra weight.