Child Height and Weight Growth Pattern — Normal Milestones, Supplements and Fussy Eating

Dr. Sandip Gupta

A podcast episode on children's growth pattern — what normal height and weight gain looks like, why growth slows after 2 years, what height depends on, whether supplements help, and how to handle a child who won't eat. Normal weight gain, 0–2 years: Average birth weight in India is 2.5 to 3.5 kg. Above 2.5 kg is called normal birth weight; below 2.5 kg is low birth weight. In the first 5 to 7 days after birth the baby loses about 10% of weight — a 3 kg baby may drop about 300 g to 2.7 kg. 0–3 months: 700 g to 1 kg per month. 3–6 months: about 600 g per month. 6–12 months: about 300 to 400 g per month. Rule of thumb: birth weight doubles by 5–6 months, triples by 1 year, and becomes four times by 2 years. A 3 kg baby is about 6 kg at 5 months, 9 kg at 1 year, and 12 kg at 2 years. Normal height gain: First year: total 25 cm. 12–24 months: 12.5 cm. Third year: 7.5 to 10 cm. After that height speed slows to roughly 5 to 7 cm per year until puberty, when a growth spurt comes. Growth charts: The best method is the growth chart, given in the government health card (separate for girls and boys) and in private vaccine cards. Height, weight and head size are checked and plotted at each visit. Between the 3rd and 97th centile is considered normal; below the 3rd is undergrowth (short or underweight), above the 97th is more than needed. Does growth really slow between 2 and 5 years? Yes, and this frightens many parents. In the first year a 3 kg baby gains about 6 kg; in the second year only about 3 kg; and after 24 months only 2 to 3 kg per year. So a child may gain just 1 kg in six months, whereas earlier they gained 1 kg in two months. This does not mean growth has stopped — growth follows a natural pattern. What height depends on: Genetics – if parents are taller, children are often taller. This is true and has a large effect, but height does not depend on this alone. Nutrition – height comes from bones growing, which needs protein, calcium, vitamin D and an overall balanced diet with vitamins and minerals. Physical activity – stretching activities keep posture correct so height shows better. About an hour of play, with sports like basketball, volleyball, yoga and swimming. Emotional state – a child who receives love and care and feels secure, who is listened to and not lonely, grows better. You need not fulfil every demand, but you should listen and try to understand. Hormones – usually normal, but if height is far below standard, thyroid and growth hormone testing may be done. If height or weight is still not appropriate: First the doctor checks whether nutrition and portions are adequate and the child eats a variety of foods. Then the child's height is seen in the context of the parents' height — the mid-parental height calculation. For boys: add mother's and father's height, add 13, divide by 2. For girls: add mother's and father's height, subtract 13, divide by 2. The child's final height typically falls within plus or minus 8 of that target, and this is plotted on the curve. If the parents' height is good but the child is not in proportion, testing is done — vitamin D, thyroid, growth hormone, depending on the situation. Do supplements help? Parents regularly ask whether giving a health drink will increase height and weight. A supplement means something given additionally — if the major calorie need, the main food, is not right, you cannot cover it with a supplement. You need a balanced diet at breakfast, lunch and dinner with carbohydrate, protein, fat, vitamins and minerals. Give supplements only on a doctor's consultation. People assume anything ayurvedic is natural and cannot cause harm — that is not true. Whether ayurvedic, homeopathic or allopathic, do not give any supplement without consulting a doctor. Supplements are no magic solution; doctors prescribe them to cover a specific deficiency when a child does not eat fully, not as a substitute for proper home food. Child who eats too little: Too much milk – if the child is filled up with milk, they won't eat solids. Keep a gap of about 2 hours between milk and a solid meal so the child feels hungry. Iron deficiency – common in the Indian diet and it reduces appetite. Iron supplementation should be started after 6 months. At government centres, iron syrup is given twice a week to children from 6 months to 5 years under the Anemia Mukt Bharat programme. Correcting iron brings the appetite back. Child who eats only certain things: This happens when parents accidentally give foods that create a habit — biscuits, ice cream, pizza, burger, kurkure, junk food. Commercial food is made to be sold, so it is engineered to taste better, and children naturally want what tastes better; they don't know what is healthy. Don't start these from the beginning. The doctor has many parents who strictly never gave outside food, and the child eats only home food because they don't know anything else. Also, parents' expectations are often too high — a child eats according to their stomach size. Add good fat like ghee, and protein-rich food, so a small quantity gives more calories. Does milk increase height? Milk gives protein (an important source for vegetarian families), calcium, and vitamin D through fortification — packet milk in India is fortified by government regulation because almost 90% of Indian children have vitamin D deficiency. All three are needed for bones. But it is not true that height increases just from drinking milk — height depends on genetics and overall diet. Too much milk can cause iron deficiency and constipation, so don't give excessive milk. Milk is also not the only option — curd, yogurt, paneer, cheese and chaach work too, and curd is easier to digest for children who struggle with milk. Lactose intolerance: Lactose is the sugar in milk, made of glucose and galactose, broken down by the enzyme lactase in the intestine. Lactase levels fall as we grow, so some children cannot digest milk — causing bloating, gas and sometimes stomach pain. Most cases are secondary (for example after diarrhoea, when lactase production stops); some are primary, present from birth. In lactose intolerance the quantity of milk has to be reduced. If it is not severe, switching to curd helps because the acid in curd breaks lactose down into lactic acid, making it easier to digest. In severe intolerance even curd cannot be given, and you must rely on other protein sources — soya, rajma, white chana, mushrooms for vegetarians; eggs and chicken for non-vegetarians. How often to check growth: Don't be paranoid about weekly checks. Weight is documented at birth, checked again at one week, then at each vaccine visit — 6 weeks, 10 weeks, 14 weeks, then 6, 9 and 12 months, then 18 months, 2 years, and after that every 6 months to a year, unless the child has a growth problem needing closer monitoring on the doctor's advice. Three things to remember: Don't worry excessively. Every child's weight and height will not be the same. Even in one class children are different ages, and height depends on age, on parents' height, and on the child's own potential. Look at your growth chart and talk to your doctor rather than listening to everyone who says your child looks small. A chubby child is not the measure of a healthy child. A lean child who is active, gaining weight properly and has fine height is not a problem. Always give your child home food. If you eat outside food often, your child will demand it too. Get them used to the food cooked at home from the start. Relevant for: parents asking what normal weight and height gain is month by month; parents whose child's weight gain has slowed after 1 or 2 years; parents told by relatives that their child is too thin or too short; parents asking what determines a child's height and how to calculate mid-parental height; parents considering health drinks, ayurvedic or homeopathic supplements; parents whose child eats very little or refuses solids after milk; parents whose child eats only junk and refuses home food; parents asking whether milk increases height and how much milk is too much; parents dealing with bloating, gas or lactose intolerance; and parents asking how often a child's growth should be measured. Disclaimer: This video is for general information and educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Every child is different — please consult your pediatrician before giving any supplement or making major diet changes, and if your child's growth falls below the normal range on the growth chart.