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Doctor insights on: Lactose Tolerance Evolution In Humans

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Have scientists found varying levels of lactose intolerance?

Have scientists found varying levels of lactose intolerance?

Yes: As with most conditions, some people have mild occasional symptoms if they consume a lot of milk, while others have more severe symptoms even with small amounts of milk or milk products. Using lactaid milk and other products helps by supplying the missing enzyme needed to properly digest milk sugar (lactose). ...Read more

Tolerance (Definition)

When one takes a drug, such as heroin or alcohol, repeatedly, 'tolerance' develops because more of the drug is needed to give the same effect on the body/brain; e.g. Liver enzymes r stimulated to metabolize the drug faster and faster. There may be a strong genetic predisposition to addiction, some studies suggesting that 1 of 10 people will become dependent on alcohol or some ...Read more


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Dairy is everywhere. Where in this world was lactose tolerance developed?

Dairy is everywhere. Where in this world was lactose tolerance developed?

Lactose intolerance: Humans are the only mammals that continue drinking milk beyond childhood. Evolutionarily, there was no need to keep lactase beyond childhood. ...Read more

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Is outbreak of autism in somali refugees linked to their eating gm relief foods?

Is outbreak of autism in somali refugees linked to their eating gm relief foods?

Hard to say: There are increasing data that point to gene alterations in those with autism that can originate in the egg or sperm prior to fertilization.What would cause that to happen and what the timing would be is an unstudied area. Over the next decade or two we may find a definite source, but for now we remain lost. The shift from early childhood to prenatal or pre-conception exposures is most confusing. ...Read more

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Do doctors believe we humans evolved from a common ancestor of apes and humans?Will we evolve into other forms in future?

Do doctors believe we humans evolved
from a common ancestor of apes and humans?Will we evolve into other forms in future?

Some do, some don't: Doctors are like other people, in that some believe we evolved from a more primitive species, but others believe we were created as modern humans. In either case, we have been evolving and will continue to evolve, ever since the days of the first humans. Doctors who believe we were created as humans, see that we are evolving, but just into slightly different humans, not into another species. ...Read more

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Can we consider atavism human tail as clear proof we had a common ancestor and evolution is true?Why does atavism human tail occur in some new borns?

Can we consider atavism human tail as clear proof we had a common ancestor and evolution is true?Why does atavism human tail occur in some new borns?

Common DNA: Dna sequencing provides convincing evidence of common ancestry, and our physical characteristics are determined by genes that are shared among many species. All human embryos begin with a tail like structure that is absorbed into the body by birth. In some babies the absorption is incomplete leaving a vestigial tail. All humans have a coccyx, or tail bone, the sole surviving remnant of our tail. ...Read more

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A1c 4.9 low carb diet, glucose tolerance passed but get dawn phenomenon of 110 or so why?

A1c 4.9 low carb diet, glucose tolerance passed but get dawn phenomenon of 110 or so why?

Check with your doc: Sounds all completely normal. But check with your doc to be safe. ...Read more

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Can you tell me process of digestion of food in small intestine in human beings ?

Can you tell me process of digestion of food in small intestine in human beings ?

Not in400 characters: There are entire text books written about this topic, some of which are thousands of pages in length. Essentially, the body mechanically breaks food down, then uses chemical reactions and enzymes to absorb the nutrients, and then excretes the waste products in the stool. The detail involves how it does that with each different type of nutrient. Fascinating field! ...Read more

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In the past three decades, have carbohydrates in this country comprised a larger % of our caloric intake?

In the past three decades, have carbohydrates in this country comprised a larger % of our caloric intake?

Yes thats true: The worst carb are the sugar rich sodas which have been promoted by the soda industry and the fruit juices.The creals fortified with sugars are another cause.There is incresed consumption of processed food.This is all at home when people eat out thats a different story, there sky is the limit in calorie and carb intake especially for children. The result is obesity, diabetese, hypertension, heart dis. ...Read more

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Is gluten different in wheat in usa and wheat in other countries. I wonder why people after going to usa become gluten intolerant?

Is gluten different in wheat in usa and wheat in other countries. I wonder why people after going to usa become gluten intolerant?

Gluten sensitivity: Gluten is the same no matter where it is made, either in the usa or outside of the usa! it is one of the proteins found in wheat. I'm not sure if your statement is correct that people becoming more gluten intolerance in the us or gluten intolerance related symptoms are more recognized here. One thing we know is there is an increase in allergic diseases in the last century in developed countries. ...Read more

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To achieve longevity via modifying existing genes in a living human being or animals - which branch of Genetics should I study? Thanks.

To achieve longevity via modifying existing genes in a living human being or animals - which branch of Genetics should I study? Thanks.

Epigenetics is the: study of what factors turn genes on an off. We are not at the mercy of our genes. Lifestyle plays and major role. Peace and good health. ...Read more

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Can suffering a recent bout of food poisoning acquired in a new environment i.E. The west african continent; carry lifelong effects? Abdomen bloated.

Can suffering a recent bout of food poisoning acquired in a new environment i.E. The west african continent; carry lifelong effects? Abdomen bloated.

No it should not.: Follow up with ur dr for any lingering symptom. Take care! http://www.M.Webmd.Com/food-recipes/food-poisoning. ...Read more

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How does lactobacillus delbrueckii impact humans , the environment and/or industry ?

How does lactobacillus delbrueckii impact humans , the environment and/or industry ?

Yogurt bug: Homework question, right? It's one of several bacteria used to ferment milk sugar to produce yogurt and sour beer. It's promoted as helping people who are lactose intolerant -- I remain skeptical. ...Read more

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Sulfur smelling flatus+increased motility after drinking cows milk/yogurt happened every time in usa but no history with buffalo milk/yogurt in india?

Sulfur smelling flatus+increased motility  after drinking  cows milk/yogurt happened every time in  usa but no history with buffalo milk/yogurt in india?

Lactose intolerance: You may have lactose intolerance. The milk sugar in cow's milk is hard to digest for some people. It is not an allergy. The sugar stays in the gut, undigested until bacteria go to work to break the milk sugar down thereby causing gas and cramps. ...Read more

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Which groups have made huge strides in eradicating infectious disease?

Which groups have made huge strides in eradicating infectious disease?

The CDC, WHO.: The cdc, and the who are the centers for disease control and the world health organization respectively. These two organizations have done great work in eradicating diseases through vaccination and coordination of resources on a national and global effort. Diseases like small-pox are a thing of the past and others like polio and diptheria are easily handled. Those like cholera are kept at bay. ...Read more

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Is it true that some kind of incestuous relationship may exist in various developed countries even between mothers and their own biological sons?

Is it true that some kind of incestuous relationship may exist in various developed countries even between mothers and their own biological sons?

Doubtful: You've been seeing the wrong websites. In all cultures sex between mothers and sons is exceedingly rare. Of course it might occur from time to time, but it's certainly not common in any society that I've ever heard of. Don't believe everything you read, on the internet or anywhere else. ...Read more

Lactose (Definition)

Found in milk. Lactose is a large sugar molecule that is made up of two smaller sugar molecules, glucose and galactose. In order for lactose to be absorbed from the intestine and into the body, it must first be split into glucose and galactose. The glucose and galactose are then absorbed by the cells lining the small intestine. The enzyme that splits lactose into glucose ...Read more