Final answer:
It is true that without proper nutrition, the body cannot effectively heal itself. Proper nutrition, which includes a balance of essential nutrients, proteins, vitamins, and minerals, is crucial for tissue repair, immune function, and overall health.
Step-by-step explanation:
The statement that the body cannot heal itself without proper nutrition is true. Proper nutrition is vital for the body to repair and maintain tissues, organs, and other essential systems. Good nutrition depends on consuming a balanced diet that includes a variety of nutrients, such as proteins, carbohydrates, fats, vitamins, and minerals.
An example of the importance of nutrition can be seen in the healing process. When the body is injured, it requires increased amounts of certain nutrients, like protein, to repair damaged tissues. Similarly, certain vitamins and minerals play a key role in immune function and in the body's ability to fend off infections.
Another example relates to the chapter summary. Essential nutrients are those that cannot be synthesized by the body and must be obtained from the diet. The lack of essential nutrients can lead to various health issues. For instance, vitamin deficiencies can hinder the body's healing processes, protein deficiencies may result in syndromes like kwashiorkor, and micronutrient deficiencies in children can cause long-term cognitive deficits.