A healthy diet is a plan to eat only particular kinds or amounts of food that help maintain or improve general health. It involves consuming appropriate amounts of all essential nutrients and an adequate amount of water in a daily basis.
Healthy diet associated with fitness or exercise help to lower many chronic health risks, such as obesity, heart disease, diabetes, stroke, hypertension and cancer.
A healthy diet involves consuming appropriate amounts of all essential nutrients and an adequate amount of water.
Nutrients can be obtained from many different foods, so there are numerous diets that may be considered healthy. A healthy diet needs to have a balance of macronutrients (fats, proteins, and carbohydrates), calories to support energy needs, and micronutrients to meet the needs for human nutrition without inducing toxicity or excessive weight gain or weight loss from consuming excessive or less amounts.
Of course, food alone isn't the key to a longer and healthier life. Good nutrition should be part of an overall healthy lifestyle, which also includes regular exercise, not smoking or drinking alcohol excessively, stress management and limiting exposure to environmental hazards. And no matter how well you eat, your genes play a big part in your risk for certain health problems. But don't underestimate the influence of how and what you eat. For example, atherosclerosis (hardening of the arteries) can begin in early childhood, but the process can be halted — even reversed — if you make healthy changes in your diet and lifestyle. The gradual bone thinning that results in osteoporosis may be slowed if you consume enough calcium, maintain adequate Vitamin D levels and participate in weight-bearing exercise. You may be genetically predisposed to diabetes, but keep your weight within a healthy range through diet and exercise and the disease may never strike you.
The keys to good nutrition are balance, variety and moderation. To stay healthy, your body needs the right balance of carbohydrates, fats, and protein — the three main components of nutrition.
You also need vitamins, minerals and other substances from many different foods, and while some foods are better than others, no single food or food group has it all — so eating a variety of different foods is essential.
Moderation means eating neither too much nor too little of any food or nutrient. Too much food can result in excess weight and even too much of certain nutrients, while eating too little can lead to numerous nutrient deficiencies and low body mass.
If you have heart disease, a heart-healthy diet begins by paying close attention to what you eat. You can reduce your chance of developing atherosclerosis, the blocked arteries that cause heart disease, with a heart-healthy diet. If the artery-clogging process has already begun, you can slow the rate at which it progresses.
While this is very important for everyone at risk for atherosclerosis, it is even more important if you have had a heart attack or a procedure to restore blood flow to your heart or other areas of your body, such as angioplasty, bypass surgery, or carotid surgery. Following prevention advice can protect against renarrowing of your arteries.
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