Doctor insights on:
Cyanosis In African Americans
Vit A deficiency,etc: Children in africa can be blinded by vitamin a deficiency, onchocerciasis, sometimes malaria, trachoma, injuries, congenital defects some of which might be corrected in a first world country like cataracts at birth, glaucoma, uveitis and a host of other conditions. ...Read moreSee 1 more doctor answer
Why is sickle-cell more common in african americans where their ancestors live in areas that had or have malaria?
Malaria resistance: Malaria is especially a killer of children. Those who carry the sickle trait - one normal and one s hemoglobin - have some resistance to this disease and this has caused persistence of this trait. Of course having both s and s causes severe disease and having either are not helpful in non-malaria regions. But it mutated in central africa and persists there in proportion to the malaria. ...Read more
Why is huntington's disease more common in people of western european descent than in other races?
Recessive gene: Inheritance follows 2 basic patterns. Dominant occurs when one of a double gene pair dominates the other & produces the outcome. In this case brown eyes. Blue eyes requires both eye color genes be blue.Any ethnic group including asians & afro americans could have blue eyes if it entered the gene pool somewhere up the line. It could pass in many generations of brown eyed parents before expression. ...Read more
Depends: T. B. Rhodesiense (east african sleeping sickness) is found in areas of eastern and southeastern africa. Over 95% of the cases of human infection occur in tanzania, uganda, malawi, and zambia. T. B. Gambiense (west african sleeping sickness) is found predominantly in central africa and in limited areas of west africa. Most of the sleeping sickness in africa is caused by this form of the parasite. ...Read more
What is a type of anemia that is inherited by african- american, mediterranean, and southeast Asian people?
There are many....: These ethnic groups occupy the thalassemia belt, which is a geographic area that overlaps with areas endemic for malarial pathogens such as plasmodium falciparum and plasmodium vivax. Thalassemia and a host of hemoglobinopathies are thought to confer resistance to malaria. The downside to these protective mechanisms is that some willl inherit combinations that are pathologic. ...Read more
Yes: The sickle cell mutation occurs in a variety of populations around the world. It is more common in sub saharan africa but exists in a variety of ethnic groups. ...Read more
Very: It is the leading cause of blindness in people over 60 in the us, and its prevalence will increase as the baby boomers age. Fortunately, this is an active area of research and it is likely that new therapeutic options the more common (dry) types of amd will be on the horizon soon. ...Read moreSee 1 more doctor answer
Why is it that people of african american, italian, hispanic, or indian backgrounds. Tend to have darker nipples, or darker in the private region?
Genetic variability: Those areas are darker not only in people of the above origin, but in caucasians as well, although, may not be as noticeable. Those areas tend to be "loaded" with melanocytes - cells that carry melanine, the dark pigment that determines a person's complexity. Some people have genetically more melanine than others. ...Read more
Ashkenazi: That is not necessarily true. Ashkenazi jewish ancestry tends to have higher carrier rates of genetic illnesses. If two people with the same carrier genetic status create a child, there is simply an increased risk of obtaining the genes to cause the disease. There are many diseases with increased rates in ashkenazi jewish population. We deal with it and keep having children! ...Read moreSee 1 more doctor answer
See below: Latest statistics from cdc show a prevalence of 2400/100, 000 african american men. ...Read more
Malaria: Malaria is prevalent in certain areas of south america. The cdc website is a good resource to look up how common diseases, such as malaria, are in a particular country. For malaria you may want to look at: http://www.Cdc.Gov/malaria/travelers/country_table/a.Html. ...Read moreSee 1 more doctor answer
No simple answer: To know the true answer, every human being in the world would have to have access to good health care, get a correct diagnosis as soon as the lesions appear, and everything be recorded. Being said, folks who are naturally darker-skinned are at greater risk for subungual and acral-lentiginous melanomas. Nobody knows why. Have any suspicious lesion of your own seen. ...Read more
High percentage: Pingueclua are a normal response to wind, dust and uv light. They are the eyes defense in the middle years to these external forces. They have no symptoms and are usually unnoticed. Many are small enough that they can only be seen with a medical microscope. Almost all young adults have some degree of pinguecula even if not obvious in a mirror. ...Read moreSee 1 more doctor answer
Probably the same.: The risk of cancer depends on environmental as well as genetic factors . China has modernized greeatly in the past 20 years, so the likely have risks for cancer increase from industrialization, but then their health care and living standards have also likely improved, so this would likely decrease their risk. The gene pool has not changed, so the occurrence of cancer is likely to be the same. ...Read more
Small social groups: Each group around the world has inherited diseases. The particular disease vary by location. This is primarily a function of social groups; you tend to marry and have children with people who live near you. Some inherited diseases may help you survive certain local illnesses better(ex malaria/sickle trait). This will make the particular inherited disease more common in those areas. ...Read more
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