Page 21 - Biology Form Two

Biology for Secondary Schools

an ideal body weight. Moreover, it healthy eating can also contribute
minimises the risk of contracting long- to poor dietary choises.
lasting diseases like cancer, diabetes, (v) Cultural and social influences:
obesity, high blood pressure and others. Dietary habits influenced by
Components of a balanced diet include: cultural preferences or social
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(i) Carbohydrates (about 60% of daily norms may not always include a
diet); variety of nutrient - dense foods
(ii) Proteins ( 10-35% according to the (vi) Time constraints: Busy lifestyles
physiological needs); and competing responsibilities can
(iii) Fats (about 15% of daily caloric limit the time available for meal
needs); planning and preparation, leading

(iv) Vitamins and minerals; and to reliance on less nutritious
(v) Water options.

(vii) Health condition: Dietary
Factors for a lack of a balanced diet restrictions due to health
A lack of balanced diet comes from conditions or allergies can
various factors, including the following: complicate maintaining a balanced
(i) Limited access to nutritious food: diet if suitable alternatives are not
People living in food desert or included.
areas with inadequate availability
of fresh produce many struggle to (viii) Psychological factors: Emotional
get a balanced diet eating or eating disorders can
disrupt balanced eating patterns
(ii) Economic constraints: Financial and lead to unhealthy food choices.
limitations can hinder the ability
to purchase a variety of healthy To promote a healthy lifestyle, it is
foods, leading to an imbalanced important to take in diets containing low
diet fats, sugars and salts but having moderate
(iii) Poor dietary choices: High amounts of proteins, carbohydrates,
consumption of highly processed vitamins, minerals and roughages. It is
food and convenience foods often also important to drink adequate amounts
in a diet that is low in essential of water and engage in regular physical
nutrients
exercise.
(iv) Lack of knowledge: Insufficient
understanding of dietary guidelines The following should be done to ensure
can lead to unbalanced food a healthy lifestyle:
choices. Misinformation aboute (i) Take recommended amounts of

Student’s Book - Form Two 15

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