Research Articles - Seafood in The Mediterranean Diet
You can read more about the science of why eating seafood is
so good for you in these articles:
Fish Really Is Brain Food!: I’m sure you’ve heard the old saw, too: “Fish is brain food!” While research has shown that eating fish and omega-3 fatty acids have been associated with lower risk of Alzheimer disease and stroke, a study in the Archives of Neurology this month seems to show that eating fish helps reduce the cognitive decline associated with aging.
A Mediterranean Diet Won't Make
You Fat: You've probably heard that a "Mediterranean Diet" will help you live longer. What is a "Mediterranean Diet"? Essentially, a diet like that of the Greek and Mediterranean regions--a diet low in meat and dairy products, but high in vegetables, legumes, fruits and nuts, cereals, fish, and olive oil, with a moderate alcohol intake.
Yes, You Can Eat Red Meat (Just
Not Every Day): My patients are always saying that they can’t eat healthy because they like to eat red meat. Well, I like eating a good steak as much as the next person and I do. I don’t eat red meat that often – probably about 5 times a month or so. I do eat leaner cuts and Dr. Gourmet recipes reflect these healthier choices.
Eating fish slows the progression
of heart disease!: We have known for a long time that eating fish is good for you. Eating fatty fish like tuna and salmon has been shown to reduce the risk of sudden death. There has not been research, however, to show what effect eating fish might have on the progression of the narrowing of arteries that feed blood to the heart. It is the reduction in size of these blood vessels (the coronary arteries) with plaque that doctors call atherosclerosis.
Why Well-Designed Research is
So Important: Arranging and completing large scale, long term research trials to study people’s lifestyle is a complex task. There are so many considerations to adjust for including variables such as age, gender, race, family history of health problems, smoking, income, and on and on. Also, finding an accurate cross sample of the population is key to any research. Even after all of this is accomplished there is always the question of whether the participants actually made a significant modification in their lifestyle during the study.
Dietary Fat and the Risk of Alzheimer's
Disease: It has become clearer and clearer that diets high in saturated fat and trans fats are associated with health problems. I have written about many different research studies that link diets high in these types of fats with heart disease and stroke. Recently, however, a very well designed study shows a clear connection between Alzheimer's Disease and an increased intake of saturated and trans fat.
Good Fats Appear to Protect You
From Pneumonia: Much has been written in my columns and in the press about good fats. A great deal of research has gone into this in the last few years, and while our knowledge is still evolving, it appears that eating foods rich in Omega 3 fats and Omega 6 fats is beneficial to your health. There are likely a number of reasons for this, but one is that these fats appear have an anti-inflammatory effect on the body.
Portion Size: Portion size is the single most important key to eating healthy.
What I (Un)Learned in Medical
School: It was about 15 years ago, but as amazing as it may seem, I actually had a professor say, "I don't care about my diet, I'll just take Zocor or another cholesterol lowering medication and keep eating my thick, juicy steaks." This was in response to a Grand Rounds lecturer speaking about the importance of diet in preventing heart disease.
Shrimp Are Fine! At least once a week I'll be talking with a patient about their high cholesterol and it seems like every third person will say, "But Doc, I don't eat any shrimp!" Almost every time they're shocked when I say tell them that shrimp is OK. The best part is that this gets their attention and I love talking about the things you can eat. (I get a similar reaction when I talk about eating red meat or eggs.)
Not just any fish for omega-3
fatty acids: Previous studies on the relationship between fish consumption and the blood levels of omega-3 fatty acids have been focused mainly on those populations who eat fish frequently. Further, the fish these groups eat tended to be saltwater fish almost exclusively.
Are you eating the right kind
of fish? I've written extensively about the omega-3 fatty acids in fish and their impact on heart health. Similarly, certain plant sterols (unsaturated fatty acids found in plants) can also have a positive impact on your risk of cardiovascular disease. Is there a combination of the right types of plant sterols and types of fish that will yield the most protective results?
Eating healthy important for
kids' weight, too: It's clear that what's known as a "Western" diet, comprised of high-fat foods, refined grains, and lots of sugar, is one of the primary causes of the rise in obesity levels throughout the Western world. Most studies of dietary patterns, however, are focused on adults and their diets while in adulthood.
Omega-3 fatty acids not just
good for your heart: By now you know that polyunsaturated fatty acids, such as omega-3 fatty acids, can help reduce your risk of heart disease. A lesser known type of polyunsaturated fatty acids are the omega-6 fatty acids. Emerging research suggests that it's not just the amount of omega-3s in your diet, but also the ratio of omega-3s to omega-6s that is important.
Omega-3 fatty acids and your
bones: Just last week I wrote about bone mineral density and omega-3 and omega-6 fatty acids. Recently researchers in Sweden published a study (Am J Clin Nutr 2007;85:803-7) in which they recruited 73 healthy young men to participate in a long-term study of bone mineral density and blood levels of omega-3 fatty acids.
Eat Fish, Eat Well, Think
Better: I have written many times about
the benefits of eating fish at least a couple of times a week. Most of the studies
so far have been "retrospective" where researchers look back at information
and work to draw conclusions. There have been such studies about the association
of fish consumption and Alzheimer's Disease, but a group of researchers report
on a prospective study in this month's American Journal
of Clinical Nutrition (2007;85:1142-1147).
Getting the balance right: We've seen in previous studies that
eating red meat has been linked to breast cancer in women
as well as colon or rectal cancer. Researchers
at the University of North Carolina noted these results as well as those
studies that link eating more fruits and vegetables with a reduced risk of
these cancers. Similarly, some dietary patterns,
such as the Mediterranean Diet, appear to protect against colon and rectal
cancers.
A healthy diet helps you avoid
skin cancer: Cancer is caused by
a multitude of factors, but one that we're sure of is cellular damage through
oxidation. High levels of sun exposure causes this oxidative damage to skin
cells, which can lead to skin cancer. On the other hand, we also know that anti-oxidants
in the diet, like vitamins C and E, can help reduce this damage.
Good fats protect your arteries: It used to be that all fat was
bad but we now know that this is not the case. Research has shown that eating
foods higher in polyunsaturated and monounsaturated fats like those in safflower
oil, olive oil and fatty fish is protective. On the other hand we know that
eating a diet that high in saturated fats can lead to heart disease.
Clinically proven! More and more such claims as "clinically
proven" are being found on food products. This is due to a wave of "functional
foods" that are hitting the market. In some cases these can be great products
with cholesterol lowering properties. In other cases the claims made are dubious.
Eat fish now. Eat fish later: We know that fish high in omega-3
and omega-6 fatty acids are good for you, but recent studies have not consistently
shown that eating these fish will help reduce the risk of specific cancers.
Alicja Wolk and her colleagues at the National Institute of Environmental
Medicine in Stockholm, Sweden, noted that those previous studies had not
differentiated between consumption of fatty fish, lean fish, and other seafood....
Omega 3 Fat Supplements and Alzheimer's
Disease: We know that
there are tremendous benefits to eating fresh, healthy foods. Numerous studies
show that eating more fish, eating foods that are high in Vitamin C and other
antioxidants as well as whole grains can prevent many conditions, including
heart disease, diabetes, stroke, cancers and Alzheimer's disease.
Fish oil and public policy: The research on supplements has been
very disappointing so far. We know for instance, that eating foods rich in Vitamin
C will prevent disease but taking Vitamin C supplements doesn't have the same
effect. A recent study showed similar findings with both antioxidant supplements
and Vitamin B.