Only to a very minor extent, the stupidity of a person could be an inherited character. That too should be through cellular transfers (somatic) rather than genetic.
In my view, most part of stupidity in a person should have relevance to the impeded oxygen availability (medically describable as shortage in ventilation, or hypoventilation) during his/her early growth period.
Total absence of oxygen even for a short while results in the death of an otherwise-healthy adult. Such an absence for relatively lesser duration damages the brain to an irreparable extent.
A reduction in the oxygen content in the air inhaled tends to make a person faint, gives headaches and migraines.All these indicate the importance of oxygen to the brain.
The brain in a newborn keeps rapidly developing. A regular and proper supply of oxygen, besides nutrition, is of great importance at this stage. Any reduction in both the above will certainly interfere with the proper development of the brain, resulting in the creation of a ‘stupid’ child. Such a stupidity would get carried into the adulthood.
Mother’s milk, being the only source of nutrition to the newborn, tends to provide it in required amounts. Inade-quacies to a small extent can occur only when a mother refrains from eating good food.
It is short supply of oxygen that makes a child stupid to a major extent.
Keeping the baby in a small room with closed windows, burning mosquito coils, incense and the like in the room, covering the face of the baby with a cloth to prevent mosquito bites or to protect from cold weather, etc. tend to interfere with brain development.
When a baby cries for want of food, or to seek parental help to overcome any form of distress, the lungs expand fully, thus enhancing an excellent inspiration of fresh air and expiration of the used air. This helps to a great extent in the development of the brain.
Well-to-do parents pay great attention to prevent their babies from crying. The same goes with parents who have a baby after a long wait.
Often, if a baby happens to be the only child to the parents, they make sure to attend to all the needs of the child then and there so that the child does not cry at all.
On the contrary, a child born as one among many children to a parent, will be frequently left unattended. Often, the baby has to cry at loud pitch for a prolonged period before getting any parental help, whether that be for food or for other needs.
One can conspicuously notice a subtle difference between these two types of children.
A crying child develops excellent intelligence and becomes very clever in the competitive world for survival. The intelligence will become noticeable on their faces, marked by a sharp nose and angular face, for instance.
Whereas, the pampered child tends to grow up with relatively lesser potentials.
A child that keeps jumping about and running around like a kid (baby lamb, or calf) also develops very good intelligence. Again a sharp nose and angular face will become recognisable features.
An active child will be breathing in and out heavily, thus enhancing better brain development.
A child who is very active in all sports activities often gets highest grades in the examinations, compared to the one who does not play but studies all the time. Good breathing plays a major role in all these.
When people grow too old, they stop moving around swiftly. Their sluggish movements and sedentary lifestyle reduce drastically their breathing capacity and related oxygen intake. This dulls the brain even if it was well-developed during their growth period, resulting in memory failure.
In other words, oxygen inadequacy makes a growing-up child stupid, whereas the same inadequacy in a grown-up person gives memory failure.
All infants during their early growth period should be allowed to cry well before feeding them, making sure not to go overboard in letting this happen, for excessive crying would certainly harm the baby with serious ill-effects.
All young and grown-up children should be encouraged to play very well, until they reach their 20th year or so. From 20, until they are 30, the violent- natured activities should be reduced to some extent.
In other words, if a person has been playing football until he is 20, he should shift from that to, perhaps, playing badminton until he is 30. From then on, he should restrict to swift walking only.
A normal walk would prove meaningful after 60. The latter will have to be reduced to slow walking after about 75 or so. All these would keep a person’s brain in a very healthy state, and stupidity or memory failure will not occur in them.
See Hyperactive, Laziness, and Memory Failure.