Consult

At 5'5" (165 cm) and 53–54 kg, your BMI is approximately 19.5–19.8, which is within the normal range. However, if you wish to gain some healthy weight, a gradual increase toward 58–60 kg can be considered depending on your body composition and overall health. From an Ayurvedic perspective, healthy weight gain is not simply about eating more or eating every 2–3 hours. Appetite, digestion, food quality, sleep, activity level and individual constitution (prakriti) should all be considered. You do not necessarily need to eat every 2–3 hours. If you are hungry between meals, nutritious snacks can certainly be included. For many people, 3 balanced meals with 1–2 nourishing snacks is a practical approach, provided there is adequate overall calorie and protein intake. As a vegetarian, include calorie-dense and protein-rich foods such as: Milk, curd and paneer, if tolerated Dal, legumes and sprouts Soy/tofu Nuts, seeds and nut butters Rice, oats, whole grains and millets Banana, dates and other fruits Healthy fats such as ghee, sesame, groundnut or other suitable oils Rather than relying on junk food or excessive sweets, aim for a gradual calorie surplus with adequate protein. Resistance/strength training 2–4 times per week can also help direct weight gain toward muscle rather than primarily body fat. Since you have a sedentary work-from-home routine, regular physical activity, adequate sleep and consistent meal timings can be particularly helpful. In Ayurveda, diet and lifestyle recommendations are best individualized based on prakriti, appetite, digestion, bowel habits, activity level and overall health. Therefore, there is no single ideal meal frequency or diet that is suitable for everyone. Since you have been lean throughout your life, it would be useful to assess your usual food intake, protein/calorie adequacy, digestion and lifestyle before deciding on a weight-gain plan. If you have recent unexplained weight loss, poor appetite, persistent loose stools, excessive thirst/urination, palpitations, significant fatigue or other concerning symptoms, appropriate medical evaluation should not be delayed.