November/December 2008
THE NEXUS INTERVIEW
Your Brain on Food
William J. Walsh, PhD
& Fernando Gomez-Pinilla PhD
In 1972, William J. Walsh was working with
ex-convicts, helping them return to society. While conventional
wisdom of the day held that childhood influences were
the main cause of behavior problems and mental illness,
he learned that many of his clients were raised alonside
siblings who had developed no law-breaking or criminal
tendencies. In fact they were well adjusted, normal people.
Walsh couldn’t understand, he says, “how some
of these people who did such horrible things came from
nice families.” He suspected that criminal behavior
had a lot to do with genetics. Murderers, he suspected,
likely had faulty brain chemistry.So he started testing
people who had committed violent acts, ex-cons, imprisoned
serial killers and mass murderers, including Charles Manson
and Richard Speck. He tested their blood, urine and tissues,
and compared them to samples from normal people. After
many years of such research, Walsh discovered that indeed
the violent people did have distinct biochemical imbalances,
compared to the general population.
This set Walsh on his life-long quest for
answers regarding brain chemistry and its effect on behavior
and mental illnesses such as autism, depression, schizophrenia,
ADHD, bipolar disorder, Alzheimer’s disease, and
other illnesses. His findings have implications for most
of us because nutrients in our diets, he has found, can
have a profound effects on our moods, our capacity to
learn, and many of our mental functions.
William J. Walsh is president of the newly-created Walsh
Research Institute in Naperville Illinois. He has authored
more than 200 scientific articles and reports and been
invited to speak at 28 international scientific symposiums.
In the 1980’s, Walsh founded the non-profit Health
Research Institute (HRI) and its clinical arm, the Pfeiffer
Treatment Center in Warrenville, Illinois. Walsh named
the center after his long-time collaborator, the late
Carl Pfeiffer, M.D., Ph.D., a physician and pharmacologist
who was one of the world’s leading nutritional biochemists.
Walsh’s most recent work includes: a research project
on Alzheimer’s disease with Argonne National Laboratory
and Louisiana State University; collaborations with, among
others, the University of Pennsylvania Medical School,
Case Western Reserve University, and Bruce Ames PhD at
Children’s Hospital Oakland Research Institute.
Here, William Walsh talks to Nexus publisher Ravi Dykema
about nutrients, mental illness, genetic individuality,
and the difficulty of getting innovative research noticed
my mainstream medicine.
RD: You started
out studying criminals’ brain chemistry. What did
you discover?
WW: We
found that criminals – not all of them, but most
of them – have distinctive chemical imbalances that
have a striking impact on their behavior. We’ve
now tested and treated more than 10,000 behavior disordered
children and adults. We’ve published highly successful
outcome studies. The frustration is that no one in the
established field pays attention to this kind of research.
We think we have probably the best answer for reducing
crime and violence in America, yet we haven’t been
able to get it into the mainstream. So now I’ve
recently been collaborating with scientists at universities
and publishing more articles, and I’m hoping that
that will get more attention.
RD: What intervention are
you using with people who have imbalances in biochemistry?
WW: The weapons we use are strictly
nutrients. Vitamins, minerals, amino acids, and what I
call natural biochemicals.
RD: Could you give us an
example of what a typical regimen would look like?
WW: Let’s say you are deficient
in vitamin B6 because of a genetic disorder. You need
B6 in your brain because it is involved in the last synthesis
step that creates serotonin, an important neurotransmitter.
If you have this genetic disorder, you will be low in
serotonin and prone to depression, anxiety or obsessive-compulsive
tendencies. You could take Prozac or Paxil and get some
benefits, but a more scientific approach is to simply
normalize the B6 levels. We’ve done this hundreds
and hundreds of times with great success.
This treatment works really well in conjunction with psychiatric
medication and counseling. It’s another weapon in
the arsenal of a mental health practitioner.
I get a lot of calls from doctors, who say “I’ve
got this patient I’ve been working with for a long
time. They went to your clinic, and now they’re
better. Can you tell me what you did?” When I explain
the testing and the use of nutrients, about 2/3 of them
lose interest. Some of them say things like, “How
can a vitamin or amino acid possibly help somebody with
schizophrenia or autism? Don’t they really need
a drug?”
The answer is “no.” Scientists have figured
out, step by step, how neurotransmitters are formed in
the brain, and they know that the raw materials, the only
ingredients for this synthesis, are nutrients: amino acids,
vitamins and minerals. Many people have genetic aberrations
that result in deficient or excessive levels of these
chemical raw materials, and it shouldn’t be a surprise
that they have mental health problems.
We’ve also learned that the greatest mischief in
the brain is caused by nutrients that are in overload.
You might get a typical input from your diet, but because
of a genetic abnormality something goes wrong and you
wind up with overloads of key nutrients. That’s
why multiple vitamins don’t work; it’s not
just a matter of treating deficiencies, but also of coping
with overloads.
RD: What’s one nutrient
that may be in overload because of a genetic abnormality?
WW: Copper. There’s a protein
in the body that has the job of getting rid of excess
copper. Imbalances in copper can cause dramatic imbalances
in two key neurotransmitters, and lead to enormous problems.
For example, 68 percent of all ADHD kids have a tendency
for very high levels of copper. Excess copper causes inattention,
distractibility, anxiety and hyperactivity. It’s
associated with sleep problems. This is all well known
in brain science.
RD: What other problems
can be caused by excess copper?
WW: We’ve found that nearly all
women with a history of postpartum depression have a tendency
for very high copper levels in their blood. It is especially
problematic for women, because estrogen and copper are
proportionately related. If you’re high in estrogen,
you’ll be high in copper. Copper is also associated
with an increased tendency for cancer; that may very well
be why high estrogen levels have been shown to increase
the likelihood of hormonal cancers in females.
RD: How would you treat
excess copper?
WW: By normalizing a protein that removes
excess copper from the body. We slowly, gradually introduce
the nutrients that stimulate the synthesis and the functioning
of that protein. People who are high in copper invariably
are zinc deficient as well, so we also slowly and gradually
normalize their zinc levels. Then the protein begins to
function and, in most cases, the copper levels return
to normal. It’s about a two-month procedure for
most people. If we did it very suddenly, and we gave them
high doses of everything, the excess copper would be dumped
from tissues and the blood levels would go even higher.
You could see a decline in health before the patient got
better, as all the excess copper is exiting the body.
So you have to be somewhat careful with overloads.
RD: What nutrients do you
use to enable the genetic synthesis of this protein?
WW: Glutathione is helpful; also, selenium,
vitamin C and vitamin E. I did patent this therapy for
autism. It seems to benefit quite a few of the autistic
kids we’ve seen.
RD: This is quite an involved
protocol; how much would it cost a patient or an insurance
company to learn the diagnosis and undergo treatment?
WW: The cost for initial evaluation
at the Pfeiffer Treatment Center is around $1,000; it
might be a couple of hundred dollars more for an autistic
patient or a schizophrenic, because there’s more
work involved.
There are a few places from which any doctor can order
the key labs and get them done for about $200. The challenge,
however, is interpreting the lab work, putting that together
with a medical history and a review of symptoms, and then
coming up with an accurate diagnosis of the chemical imbalance
and the design of the treatment program.
But there’s a tremendous amount of interest in this
protocol, and more doctors are getting trained in performing
it. I was just in Australia in April, where we trained
26 doctors, including a couple of psychiatrists. Hundreds
and hundreds of Australians are now receiving these kinds
of therapies, and I’m getting a lot of great reports.
I’m scheduled to go to Norway in November to train
30 to 35 practitioners, then to Tokyo in January. My goal
is to train 1,000 doctors in the next 10 years.
RD: Once you have the initial
diagnosis, how much does the treatment regimen cost?
WW: It varies with each person. A typical
program would cost between $60 and $100 per month, certainly
a small fraction of what it would cost for typical medications.
At the high end, treatment for autistic children can be
as much as $100 to $150 per month.
RD: You said earlier that
medical professionals don’t seem to pay attention
to this protocol, or your results. Why?
WW: It has to do with the history of
understanding and treating mental illness in the United
States. Before the 1960s, if you had clinical depression,
you would find yourself lying on a couch with a caring
psychiatrist delving into your background, trying to find
out what traumatic events or circumstances in your childhood
may have caused this depression. The feeling was, at that
time, that depression was a result of life circumstances
and negative events that had happened to you.
The big revolution in mental health happened in the mid-‘60s,
when scientists discovered that people with clinical depression
are born with these tendencies. It didn’t take long
to realize that it had to do with brain chemistry and
neurotransmitters. In the middle ‘70s, neuroscientists
got all excited about this, and they began focusing on
neurotransmitters like serotonin and dopamine. But if
you were a psychiatrist, this was a terrible thing. You
had spent 10 years learning how to help your patients,
and then your profession comes to you and says “Sorry,
everything we taught you was wrong. These people actually
have some kind of a genetically caused chemical imbalance
in their brains.”
Once this was discovered, the entire medical and scientific
community shifted its focus toward drug therapy. At that
time, the medications used were things like Thorazine
and Haldol and other heavy-duty drugs. Now, more modern
and effective medications with fewer side effects are
available. But the approach is still drug based, and most
studies are focused on improving drugs – finding
newer and better medications.
I think a hundred years from now, people will look back
on this and will belittle the medication-based treatment
approach to mental illness. The real key to treating mentally
ill people is to find out what’s gone wrong, genetically
or biochemically. What’s different in the molecular
biology of the brain? I think that researchers will find
that, in most cases, it’s a biochemical abnormality
caused by differences in genetics, and those differences
can be corrected without drugs.
We’re not at that point yet, because our knowledge
is not great enough. For example, with schizophrenics,
my colleagues and I urge them to stay on medication and
to also do our treatment. After 6 months or a year, most
of them say that they’ve been able to function far
better with a combination of the two. We have hundreds
of schizophrenics who are now living normal lives, but
most of them still need some medication support, because
we haven’t learned how to do it with just nutrients
alone. However, other issues may be treated by nutrients
alone. For example, when we treat clinical depression,
behavior disorders, autism and ADHD, 80 percent of the
families we see tell us that they’ve been able to
completely eliminate their medication after our protocol.
We are not opposed to psychiatric medications; we think
they’re a godsend for millions of people. However
there’s a more scientifically accurate and effective
way to treat people.
RD: How prevalent are some
of these disorders?
WW: More than 1 percent of all Americans
are schizophrenics, and 2 to 4 percent experience psychiatric
psychosis episodes at least once in their lifetime. So
that’s 1 out of 25 Americans right there with severe
brain chemistry imbalances. With respect to behavior disorders,
the incidence of ADHD, according to NIH, is 4.75 percent,
although now they’re thinking that number may be
closer to 8 percent. Roughly 1 in 12 Americans have a
biochemical brain chemistry problem called ADHD. Some
studies say as many as 20 percent of all Americans suffer
from clinical depression at some point in their lifetime,
and most of these cases are caused by a genetic predisposition.
RD: What about mental illnesses
that aren’t caused by genetics?
WW: We’ve met people who have
had head injuries that cause psychiatric problems; that’s
not a biochemistry problem. Once in a while we’ve
met a person who’s had such a traumatic event in
their lives that they’ve not been able to get over
it; their chemistry is normal, yet they’re depressed.
One woman we saw said she had plenty of friends, a happy
marriage, a job that she loved, and still she was horribly
depressed and had been for 8 years. Well, we found out
that 8 years ago, her only child died of leukemia. That
explained why she was depressed; it was such a terrible
event for her, she couldn’t get over it, even though
she had normal chemistry.
But that’s the exception, not the norm. I’ve
done a lot of forensic studies on people like Charles
Manson and Richard Speck. I have data on more than 800
people in prisons, and roughly 95 percent of them suffer
from distinctive chemical imbalances that have an impact
on their brain function.
This is such exciting information; I’ve known for
so many years how to help these people. I’ve given
presentations in many places, to senators, to heads of
corrections departments. Everyone seems very interested
and excited about this news, but nobody ever seems to
have money to pursue it. If I had a dangerous drug that
would help behavior, I think I’d have no trouble
getting support. But people have difficulty believing
that nutrients can be powerful.
RD: If nutrients have such
a huge impact on our brains, perhaps the average American
diet is having an impact on behavior.
WW: That’s absolutely true. For
example, a person who tends toward clinical depression
may have low serotonin levels. These people would do very
well on a high-protein diet, because almost all of these
people have a disposition toward being what we call under-methylated.
Methyl comes from methionine, which is a protein in food.
Methionine has a powerful effect on the amount of serotonin
that’s produced in the brain. We’ve also learned
that these same people tend to be very low in calcium
and magnesium, so a diet rich in calcium and magnesium,
as well as protein, would really help them.
Then there are people with anxiety conditions who have
the opposite problem: they have too much methyl in their
systems. These people thrive on a vegetarian diet. They’re
also very low in folate, so they’d do very well
by eating foods that are rich in folates, such as leafy
greens and salads. Some people have to avoid certain things;
for example, a woman with a history of postpartum depression
needs to avoid any supplements containing copper, because
almost all such women have high blood levels of copper
because of genetics. They should drink bottled water,
since there’s an increasing amount of copper in
the water supply in the United States.
But you have to get an accurate metabolic analysis to
find out what you need to emphasize in your diet and what
you need to avoid. The best diet for one person may be
the worst diet for the next person. I think that’s
going to be the next major advance in nutrition and diet
– formulating specialized, individualized diets
for people. You’re not going to get a one-size-fits-all
diet, because of the genetic differences in human beings.
RD: We’ve been talking
about some severe cases, like people in prison or those
with significant behavior issues. What about the average
person who may have a higher level of anxiety than is
justified by their past experiences or current lifestyle?
Let’s say that person is reading this and can’t
get a sophisticated diagnostic process for one reason
or another. Do you have any general suggestions for a
healthy diet and lifestyle?
WW: I spent a few years looking at the
general population, not people who might have a horrible
problem like schizophrenia or autism. About 10 years ago,
I developed a system whereby the average person, at a
cost of less than $100, would be able to identify what
their biochemical type was. Every one of these chemical
imbalances—such as methylation problems, folic acid
deficiencies or toxic metal overload – has symptoms
associated with it. If you do a careful medical history
and ask the right questions, you can be quite accurate
in identifying what a person’s basic biochemistry
is.
We found that there were 26 sub-groups, named from A to
Z. For example, I’m a type L, which means I’m
a bit obsessive/compulsive, and tend to be a perfectionist;
for example, when I play sports, I get overly competitive.
I was playing racquetball yesterday and in the heat of
the battle, I got whacked in the eye with a racket that
left me with a big black eye. That type L behavior is
associated with under-methylation.
There are classic symptoms associated with each one of
these sub-groups of chemical imbalances. I’m hoping
to include a questionnaire in my upcoming book, so that
a reader can score him or herself to get a good idea of
what nutrients he or she needs to emphasize and which
ones he or she would be better off avoiding.
RD: Let’s say someone
has been eating a terrible American diet of fast food
containing predominantly white flour, meat, corn, sugar
and trans fats, and switches to a really healthy diet.
What changes in mental health would you expect to see?
WW: I would expect that for people who
are biochemically intact, there would be very little change—maybe
a third of the population. But another two thirds would
see a significant change after a few months.
RD: Does diet and nutrition
have that kind of dramatic impact on children’s
behavior?
WW: Yes, diet has a lot do to with a
child’s ability to learn. There’s no doubt
about that. I have seen more than 6,000 children with
ADD, hyperactivity or learning disabilities, and we’ve
seen a lot of benefit just by straightening out their
diets. Many of them also have genetic imbalances, where
they might need supplement or nutrient therapy to normalize
rather massive chemical imbalance tendencies, but the
nutrition piece is critical.
And exercise and sleep are important and well, especially
exercise. If you have the right diet and you exercise,
your sleep will, in most cases, be fine. Again, there
are people with genetic abnormalities who will still have
sleep problems, but for most people, many issues can be
corrected by the right balance of nutrition and exercise.
RD: So in terms of public
health and treating disease, it sounds like we’re
presently barking up the wrong tree.
WW: Yes, the medical system in America
is allopathic. That’s the number one problem. Doctors
basically sit in their offices and wait for somebody to
come to them with a problem. There’s not enough
preventative medicine going on, and that’s what’s
missing. A person shows up with a heart attack, cancer
or diabetes, and the medical profession is trained to
do a beautiful job of coping with that disaster. But they
don’t know how to prevent these disorders.
Medical science has spectacularly improved outcomes in
the case of physical problems, like heart disease or broken
bones. But this doesn’t hold true for mental problems;
that’s still a black art trying to emerge into a
science.
RD: Why do you think that
is? And why is it that preventive medicine and nutrition
are so foreign to our medical system?
WW: It’s not how our system is
set up. We have a medical system that doesn’t respect
and value nutrition. Doctors today might spend two or
three days in all their years of medical training on nutrition.
Research isn’t focusing on prevention; it’s
aimed at finding a better drug, a psychiatric medication,
a foreign molecule that can help somebody. There’s
nothing sinister or collaborative in this. It’s
just a market-driven event. Look in any university’s
medical school: where does most of their funding come
from? Where do they get their research grants? Where do
they get their endowed chairs? Most of them come from
pharmaceutical companies, so they tend toward research
that would please the benefactors. Nutrient therapy is
something that might actually anger or upset their benefactors.
If you look at the medical journals, almost all of the
advertising is for pharmaceuticals, psychiatric medications.
It can be hard for these editors to accept articles that
will tend to harm that industry. But eventually, people
are going to learn that nutrients and a better diet can
improve their lives.
RD: What about insurance
companies? How do they factor in?
WW: Insurance companies are a natural
ally of preventive medicine, and they’re getting
more and more powerful in dictating what kind of medicine
is given to people. Their interest is in keeping people
healthy, and not having to pay for treating disorders
or problems. So on one hand you have a very powerful natural
ally, and the other sort of a natural enemy.
RD: How does this affect
the research you’re doing, and your attempts to
make it public?
WW: If the work that my colleagues around
the world and I are doing ever got enough attention, if
we started showing alternatives to psychiatric medications,
you can imagine what would happen to us. We’re hoping
to get enough solidarity and collaborations with universities
and powerful people so they won’t kill us off. I
guess we haven’t succeeded enough to get their attention,
but eventually, it will happen. When it does, they’ll
trot out experts to say that what we’re doing is
hokum, because their bottom line depends on it.
RD: They’ll challenge
your research.
WW: I recently developed an exploratory
treatment for Alzheimer’s disease. After testing
65 people on this therapy, many of them reported part
of their memory coming back, and we have people who have
stabilized for many years. Now, there’s a medication
called Aricept for Alzheimer’s. Alzheimer’s
is a disease where your brain cells just start dying off
at a rapid rate. Aricept does nothing to stop or slow
the death of brain cells. It enables whatever’s
left of the surviving brain to function better for a while.
So you typically get 4 to 8 months of better functioning
while the brain is dying.
When we present our Alzheimer’s research at a medical
meeting, if it gets any kind of publicity, I’m sure
we will be attacked by the company that produces Aricept.
So far, I have not had a problem, and I’m doing
everything I can to build partnerships in the traditional
medical community, such as in universities and medical
schools.
That was the mistake I made in the past. I worked with
a relatively small, unknown organization that wasn’t
likely to get publicized. Once, I went to the American
Psychiatric Association and presented data on what I thought
was a key understanding for autism. A number of media
people came to me afterward; someone from Reuter’s
asked “What university are you associated with?”
When I told him we weren’t associated with a university,
he said, “Well, I’m not going to be able to
publish this. It will raise too much hope, and we don’t
know who you are. We can’t have confidence that
your results are really legitimate.”
Now I’m doing everything I can to collaborate with
well-known, widely accepted, high-quality people. The
main thing is to get this out there and get people to
pay attention.
| Foods
for mood
Fernando Gomez-Pinilla
PhD
Can
we eat our way out of anxiety? Is it possible to
cure depression by crafting a daily meal plan that
includes certain nutrients? More evidence is pointing
in that direction.
Here, Fernando Gomez-Pinilla, a UCLA
professor of neurosurgery and physiological science,
presents some of the more compelling findings.
RD: Your research focuses
on the connection between lifestyle and mental health.
What have been some of your recent findings?
FGP: We’ve
found that exercise, nutritional factors and sleep
have the ability to influence processes in the brain
that control behavior, learning and memory. Other
research has found that these factors are also directly
related to mental problems, such as depression.
We’ve also been looking at brain-derived neurotrophic
factor, or BDNF; a reduction in this chemical is
strongly associated with depression in humans. We’re
able to measure BDNF levels in particular regions
in the brain.
RD: What about people who
are pretty normal on most scales, but have anxiety
problems or compulsive behaviors? Is it likely that
their diet, sleep and exercise habits are having
a dramatic effect on their mental state?
FGP: Yes. Unhealthy
diet, sleep, and exercise habits can be considered
risk factors for exacerbating extreme behaviors
and unbalancing “normal behaviors.”
RD: Will these discoveries
of yours and your colleagues change the practice
of psychiatry or public health campaigns? For example,
if the connection between mental health and diet
becomes widely accepted, do you think people will
realize that having lunch at McDonalds may produce
the distress and discomfort they feel in the evening?
FGP: You must have
seen the movie Supersize Me. The problems
depicted in the movie are directly associated with
the brain. Until recently, poor nutrition was linked
with detrimental effects on, for example, the cardiovascular
system. In the last few years, however, this perception
is changing. We’ve been finding a direct effect
on the brain in terms of nerve cell function, the
transmission of information across different regions
in the brain, and the metabolism of the brain.
About your question: several studies in humans have
shown that certain foods, like junk food, can promote
dysfunctions in behavior. But clinicians sometimes
don’t stay informed about developments in
basic science. Historically, there’s a lapse
of several years in the acceptance of many scientific
findings. It may be slow, but this acceptance will
eventually happen.
RD: Once these findings catch
on, how might doctors change their advice for maintaining
good health?
FGP: Family practitioners
can help their patients take better advantage of
their own habits. These practices – eating,
sleeping, exercising – are normal daily functions.
By managing these activities appropriately, we may
dramatically influence our mental states. I am not
saying that we can fully replace medication. But
any pharmacological intervention should be in conjunction
with appropriate lifestyle changes.
RD: You co-wrote a research
paper about high fat and refined sugar diets reducing
BDNF in the hippocampus (a portion of the brain
that helps regulate emotion and memory). Why did
you focus on those particular foods?
FGP: Because that
particular diet is closest to what people eat in
fast food restaurants, or in junk food. We found
striking results in terms of effects on learning.
In the study, animals who ate a diet high in fat
and sugar had more difficulty learning. In separate
studies, we evaluated how this kind of diet can
affect the capacity of the brain to deal with challenge,
such as a traumatic injury – the kind that
happens in typical traffic accidents. We found the
animals who had eaten this diet had a reduced capacity
to heal. We also found that the effects were progressive;
In other words, the longer the animal ate this diet,
the worse the effects. Human studies have found
similar results.
RD: One of your articles,
published in the journal Nature, makes a link between
diabetes and certain mental states. I think you
present it as an illustration of the link between
the gut – that is, visceral function –
and the brain.
FGP: Diabetes is
an interesting disease; it’s a physical illness
that involves insulin regulation, but it can also
affect mental health. It’s starting to look
like many other diseases that are associated with
the metabolism of food can have some effects on
the brain. It appears that eating too many calories
is not good for the brain, for example.
RD: Have you yourself eliminated
certain foods because of your discoveries?
FGP: Certainly. But
the foods I try to eliminate are difficult because
the things that taste really good are some of the
worst. Like sugar. Everyone likes chocolate and
ice cream. But both have too much sugar and too
many calories. Hamburgers and other fast foods are
high in saturated fats, and chips contains trans
fats. Some foods have a good reputation for enhancing
mental health, like fish. My idea is not to get
completely paranoid about this, but to be mindful
of what I eat.
RD: Are there any foods that
you make sure you eat every week, or any supplements
you take regularly?
FGP: Eating a wide variety of foods,
especially fruits and vegetables, is a good idea,
since many have important nutrients for the brain.
Berries, for example, are known to have lots of
antioxidants and several components that can heal
the brain. Fish is much better than beef, because
it provides better protein and omega 3 essential
fatty acids. As for supplements, you can get most
of the vitamins you need and antioxidants through
a diverse, nutritionally dense diet. People who
don’t eat fish can take essential fatty acid
supplements.
RD: What is it in fish that’s
so important?
FGP: They’re
rich in omega 3 fatty acids, which are a structural
component of cell membranes; they’re like
the bricks in the cell wall. When we don’t
have enough of these in the diet, the cells replace
them with other components, which aren’t good.
For example, let’s say you buy a cheap part
for your car to replace a broken part, but it doesn’t
work quite right. Eventually, there will be problems.
The same thing happens in the brain; if the right
parts aren’t there, you’ll eventually
experience some effects on your mental health that
affect your moods and a wide range of other brain
functions. Your body can’t produce these fatty
acids on its own. You must get them in your diet
– ideally every day, or at a minimum, three
times a week.
RD: Any last thoughts?
FGP: I think the
big message here is that a combination of all these
factors – diet, exercise and sleep –
is vital. The type of food you eat is important,
but you are also affected by getting enough exercise.
You need all three for optimal mental health.
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