Obesity raises the risk of diabetes and high blood pressure, the most common causes of kidney disease. Even if you don’t have diabetes or high blood pressure, obesity itself may promote kidney disease and quicken its progress.

High blood pressure

High blood pressure, also called hypertension, is a condition in which blood flows through your blood vessels with a force greater than normal. High blood pressure can strain your heart, damage blood vessels, and raise your risk of heart attack, stroke, kidney disease, and death.

Heart disease

Heart disease is a term used to describe several problems that may affect your heart. If you have heart disease, you may have a heart attack, heart failure, sudden cardiac death, angina NIH external link, or an abnormal heart rhythm. High blood pressure, abnormal levels of blood fats, and high blood glucose levels may raise your risk for heart disease. Blood fats, also called blood lipids, include HDL cholesterol, LDL cholesterol, and triglycerides.

Losing 5 to 10 percent of your weight may lower your risk factors for developing heart disease. If you weigh 200 pounds, this means losing as little as 10 pounds. Weight loss may improve blood pressure, cholesterol levels, and blood flow.

Stroke

Stroke is a condition in which the blood supply to your brain is suddenly cut off, caused by a blockage or the bursting of a blood vessel in your brain or neck. A stroke can damage brain tissue and make you unable to speak or move parts of your body. High blood pressure is the leading cause of strokes.

Sleep apnea

Sleep apnea is a common disorder in which you do not breathe regularly while sleeping. You may stop breathing altogether for short periods of time. Untreated sleep apnea may raise your risk of other health problems, such as type 2 diabetes and heart disease.

There are many obesity problems like this. If we follow prober diet we can protect our health.

treating obesity:

If you're obese, speak to your GP for advice about losing weight safely.

Your GP can advise you about losing weight safely by eating a healthy, balanced diet and regular physical activity.

They can also let you know about other useful services, such as:

• local weight loss groups – these could be provided by your local authority, the NHS, or commercial services you may have to pay for
• exercise on prescription – where you're referred to a local active health team for a number of sessions under the supervision of a qualified trainer

If you have underlying problems associated with obesity, such as polycystic ovary syndrome (PCOS), high blood pressure, diabetes or obstructive sleep apnoea, your GP may recommend further tests or specific treatment.

Diet:

There's no single rule that applies to everyone, but to lose weight at a safe and sustainable rate of 0.5 to 1kg (1lb to 2lbs) a week, most people are advised to reduce their energy intake by 600 calories a day.

For most men, this will mean consuming no more than 1,900 calories a day, and for most women, no more than 1,400 calories a day.

The best way to achieve this is to swap unhealthy and high-energy food choices – such as fast food, processed food and sugary drinks (including alcohol) – for healthier choices.

A healthy diet should consist of:

• plenty of fruit and vegetables
• plenty of potatoes, bread, rice, pasta and other starchy foods (ideally you should choose wholegrain varieties)
• some milk and dairy foods
• some meat, fish, aggs, beans and other non-dairy sources of protein
• just small amounts of food and drinks that are high in fat and suagr

Try to avoid foods containing high levels of salt because they can raise your blood pressure, which can be dangerous for people who are already obese.

You'll also need to check calorie information for each type of food and drink you consume to make sure you don't go over your daily limit.

Some restaurants, cafés and fast food outlets provide calorie information per portion, although providing this information isn't compulsory. Be careful when eating out because some foods can quickly take you over the limit, such as burgers, fried chicken, and some curries or Chinese dishes.

Diet Programs and fad Diets:

Avoid fad diets that recommend unsafe practices, such as fasting (going without food for long periods of time) or cutting out entire food groups. These types of diets don't work, can make you feel ill, and aren't sustainable because they don’t teach you long-term healthy eating habits.

This isn't to say that all commercial diet programmes are unsafe. Many are based on sound medical and scientific principles and can work well for some people.

A responsible diet programme should:

• educate you about issues such as portion size, making behavioural changes and healthy eating 
• not be overly restrictive in terms of the type of foods you can eat 
• be based on achieving gradual, sustainable weight loss rather than short-term rapid weight loss, which is unlikely to last

Very low  Calorie Diet:

A very low calorie diet (VLCD) is where you consume less than 800 calories a day.

These diets can lead to rapid weight loss, but they aren't a suitable or safe method for everyone, and they aren't routinely recommended for managing obesity.

VLCDs are usually only recommended if you have an obesity-related complication that would benefit from rapid weight loss.

VLCDs shouldn't usually be followed for longer than 12 weeks at a time, and they should only be used under the supervision of a suitably qualified healthcare professional.

Speak to your GP first if you're considering this type of diet.

Exercise:

Reducing the amount of calories in your diet will help you lose weight, but maintaining a healthy weight requires physical activity to burn energy.

As well as helping you maintain a healthy weight, physical activity also has wider health benefits. For example, it can help prevent and manage more than 20 conditions, such as reducing the risk of type 2 diabetes by 40%.

The Chief Medical Officers recommend that adults should do at least 150 minutes (two-and-a-half hours) of at least moderate-intensity activity a week – for example, five 30-minute bouts a week. Something is better than nothing, and doing just 10 minutes of exercise at a time is beneficial.