Deficiency Diseases and Disorders

Malnutrition is the general condition of inadequate nutrition, whether from insufficient food intake or poor absorption. Marasmus and Kwashiorkor are specific types of malnutrition - Marasmus involves general wasting from calorie deficiency, while Kwashiorkor is protein deficiency with edema. Option D is incorrect because it lists the general and specific terms together redundantly.

Vitamin A deficiency causes retardation of growth in children. Vitamin A is essential for normal growth and development, and its deficiency leads to stunted growth and other developmental issues.

Vitamin E deficiency causes loss of fertility in both males and females. Vitamin E is important for reproductive health, and its deficiency can lead to fertility problems and reproductive system disorders.

Vitamin D deficiency causes rickets, a condition characterized by soft and weak bones primarily in children. In adults, severe deficiency leads to osteomalacia. Vitamin D is essential for calcium absorption and bone mineralization. Rickets presents with bowing of legs, skeletal deformities, and growth retardation.

Vitamin C (ascorbic acid) deficiency causes scurvy, characterized by fatigue, swollen gums, bleeding from mucous membranes, and poor wound healing. Scurvy was historically common among sailors on long voyages without fresh fruit. Vitamin C is essential for collagen synthesis. The other options are unrelated: Haemophilia is a clotting disorder, colour blindness is genetic, and loss of appetite is nonspecific.

Beri-Beri is caused by Vitamin B1 (thiamine) deficiency. It affects the cardiovascular and nervous systems, causing symptoms like weakness, nerve damage, and heart problems. Other B vitamins play different roles - B5 (pantothenic acid) aids metabolism, Vitamin A supports vision and immunity, and Vitamin C is essential for collagen synthesis and immunity.

Beri-beri is caused by thiamine (Vitamin B1) deficiency. It affects the nervous and cardiovascular systems, causing symptoms like muscle weakness and nerve damage.

Rickets is a bone development disorder in children caused by Vitamin D deficiency, which leads to soft and weakened bones. Vitamin D is essential for calcium and phosphorus absorption - without it, bones cannot mineralize properly, causing skeletal deformities and growth problems.

Hepatitis is inflammation of the liver, commonly caused by viral infections (Hepatitis A, B, C, etc.), alcohol, or toxins. The liver is the primary organ affected. Heart conditions are cardiological, kidney diseases are renal, and stomach issues are gastrointestinal - none are directly related to hepatitis.

Alcohol interferes with the absorption and storage of B-complex vitamins, which are crucial for metabolic and neurological functions. Deficiencies in these vitamins can indeed result in various dermatological and psychological issues.

Beri-Beri is a deficiency disease caused by lack of Vitamin B1 (thiamine). Vitamin C deficiency causes scurvy, Vitamin A deficiency causes night blindness and xerophthalmia, and Vitamin B5 deficiency causes fatigue and numbness.

Rickets is a bone disorder caused by deficiency of calcium, vitamin D, or phosphate. It leads to soft and weak bones, particularly in children. The condition causes bone pain, poor growth, and skeletal deformities. Blindness, cancer, and rabies are unrelated to calcium deficiency.

Diabetes mellitus occurs when the pancreas produces insufficient insulin or the body becomes resistant to insulin effects. Insulin is the hormone responsible for regulating blood glucose levels by facilitating glucose uptake into cells. Without adequate insulin function, blood sugar levels rise dangerously.

Calcium deficiency in children leads to rickets, a condition where bones become soft and weak. This happens because calcium is essential for proper bone mineralization. Without adequate calcium, growing bones cannot harden properly, leading to skeletal deformities and fractures.

Rickets is primarily caused by vitamin D deficiency, which impairs calcium absorption, though severe calcium deficiency can also contribute. The disease softens and weakens bones in children, leading to skeletal deformities. Blindness, cancer, and rabies are unrelated to calcium deficiency - rabies is a viral infection, blindness has many causes, and cancer is uncontrolled cell growth.