Scottish Daily Mail

What to eat to beat BREAST CANCER

- By Dr MICHAEL GREGER

BREAST cancer doesn’t occur overnight. that lump you feel in the shower one morning may have started forming decades ago. Indeed, autopsy studies suggest that as many as 39 per cent of women in their 40s already have breast cancers growing within their bodies that may be simply too small to be detected by mammograms

the scary truth is that what doctors call ‘early detection’ is actually late detection. that’s why you shouldn’t wait for a diagnosis before you start eating a healthier diet.

Not only may it stop you getting cancer in the first place, but it may also slow its growth to the point where it’s no longer a threat.

GOBBLE UP GREENS

REMARKABLY, researcher­s have found that women placed on a plantbased diet, along with walking every day, improved their cancer defences within just two weeks. at that point, their blood was potent enough to kill 20-30 per cent more breast cancer cells than before.

Yet, unfortunat­ely, even after a breast cancer diagnosis, most women don’t make the dietary changes that could help them most.

another study of nearly 1,500 women found that remarkably simple changes — such as eating just five or more servings of fruit and veg per day along with walking for 30 minutes, six days a week — had a significan­t effect.

Compared with patients who did none of these things, these women appeared to have nearly half the risk of dying from breast cancer in the two years following diagnosis.

In other studies, sulforapha­ne — a component of cruciferou­s vegetables such as broccoli — has been shown to suppress the ability of breast cancer stem cells to form tumours. So if you’re currently in remission, eating lots of broccoli may help keep your cancer from returning.

RED WINE IS FINE

What about alcohol? In 2013, scientists published a compilatio­n of more than 100 studies on breast cancer and light drinking (up to one glass a day).

Remarkably, they found a small increase in breast cancer risk even among women who had one drink or less per day. Every year around the world, they estimated, nearly 5,000 breast cancer deaths may be attributab­le to light drinking.

the only exception was red wine, which contains a compound that may cancel out the damage caused to the body when it breaks down alcohol. this compound appears to suppress the activity of an enzyme called oestrogen synthase, used by breast tumours to fuel their own growth.

So have a glass of red wine if you like. But the best foods for suppressin­g this enzyme are purple grapes — preferably with seeds — plain white mushrooms, strawberri­es and pomegranat­es.

DARK DREAMS

MOST of us know that the hormone melatonin helps regulate our sleep. But it also seems to play another role — suppressin­g cancer growth. think of melatonin as helping to put cancer cells to sleep at night. to investigat­e this theory further, researcher­s in Boston came up with the clever idea of studying blind women.

the thought was that because blind women can’t see sunlight, the brain never gets the signal to stop secreting melatonin into their bloodstrea­ms.

Sure enough, the researcher­s found that blind women may have just half the odds of getting breast cancer as sighted women. Conversely, women who interrupt their melatonin production by working night shifts appear to be at increased risk of breast cancer.

Even living on a particular­ly brightly-lit street may increase the risk.

therefore, it’s probably best to sleep in a room with heavy blinds and no lights.

But there’s something else you can do to keep up your production of melatonin. Yes, more vegetables!

In 2005, Japanese researcher­s found an associatio­n between

higher vegetable intake and higher melatonin l evels. Meat, unfortunat­ely, seems to have the opposite effect. In a Harvard University study, the diets of nearly 1,000 women were analysed before t heir morning melatonin levels were measured.

Meat consumptio­n was the only food significan­tly associated with lower melatonin production, for reasons that are as yet unknown.

DITCH THE BARBECUE

One of the worst things you can do if you’re worried about breast cancer is to cook beef, pork, fish or poultry at a high temperatur­e — which includes frying, grilling and roasting.

eating boiled meat, therefore, is probably the safest.

This is because meat cooked above 100c produces cancer- producing substances called heterocycl­ic amines (HCAs). The longer that meat is cooked, the more HCAs form.

This may explain why eating welldone meat is also associated with increased risk of cancers of the colon, oesophagus, lung, pancreas, prostate and stomach.

The HCAs in cooked meat are also thought to explain why women who eat more grilled, barbecued or smoked meats over their lifetimes may have as much as 47 per cent higher odds of breast cancer.

The Iowa Women’s Health Study f ound women who ate their bacon, steak, and burgers ‘ very well done’ had nearly five times more chance of getting breast cancer than women who liked meat served rare or medium.

JUST ADD BROCCOLI

IS THERE any other way to lessen the carcinogen­ic effect of cooked meat? To f i nd out, researcher­s measured the levels of HCAs in the blood of people who’d just eaten pan-fried meat.

Over the next fortnight, they added about 500g (just over a pound) of broccoli and Brussels sprouts to their daily diets and then asked the women to eat fried meat again.

As expected, there were fewer HCAs in their blood — because the vegetables had helped the liver detoxify some of them.

At this point, the subjects then stopped eating their veggies and, two weeks later, ate pan-fried meat again.

What happened next was a great surprise. Researcher­s had assumed that the level of harmful carcinogen­s in their blood would be just as high as before — but they weren’t. What’s more, even weeks afterwards, the HCAs still hadn’t climbed back to their previous level.

This finding suggests two things. One, that having broccoli or brussels sprouts with your steak will decrease your body’s exposure to carcinogen­s. Two, that you can shore up your defences before a big barbecue by eating broccoli or sprouts days or even weeks before. (Or even try a veggie burger.)

MORALE FIBRE

EVERY 20g of fibre intake per day has been associated with a 15 per cent lower risk of breast cancer.

And you may not even need that much.

Researcher­s at yale University and elsewhere have done detailed studies on pre - menopausal women who eat more than about 6g of soluble fibre (the equivalent of a cup of black beans) a day.

The result? The women had 62 per cent lower odds of getting breast cancer compared with women who consumed less than around 4g a day.

CUT CHOLESTERO­L

BREAST cancer is thought t use cholestero­l to help the cance migrate and invade more tissue

In other words, breast tumour may be taking advantage of hig cholestero­l levels in your blood t accelerate their own growth.

So, if lowering cholestero­l ca help lower the risk of breas cancer, shouldn’t more wome be taking statins? Probably not

The first major long-term study on breast cancer an statins has found that wome who have been taking statins for

a decade or more have twice the risk of contractin­g two common types of invasive breast cancer.

So, i t’s far better to l ower cholestero­l levels naturally by improving your diet.

CORE VALUES

PeoPle who eat an apple a day — or even half an apple — appear to have significan­tly lower risks of getting cancer.

one study found, for instance, that eating less than one apple a day lowers the risk of breast cancer by 24 per cent. the risk of ovarian cancer, laryngeal cancer and colorectal cancer is also lowered by significan­t amounts.

But don’ t be tempted to just eat t he flesh a nd throw away the peel!

Depending on the variety of apple, the peel’ san ti- oxidant power may be between two and six times greater than the pulp.

When researcher­s at Cornell University in New York dripped extracts of apple peel and pulp onto cancer cells, the peel stopped cancer growth ten times more effectivel­y.

Something in the apple peel and pulp appears to reactivate a tumour-suppressor gene which is known as maspin — which helps keep breast cancer at bay.

SOYA RULES!

SoYa seems not only to lower breast cancer risk, but also to help reduce menopausal hot flushes. In addition, five studies have found that, overall, the women who ate the most soya lived significan­tly l onger and had a significan­tly lower risk of breast cancer recurrence. In one study, 90 per cent of the breast cancer patients who ate t he most soya after diagnosis were still alive f i ve years later. Yet half of those who ate little to no soya had died.

MAGNIFICEN­T MUSHROOMS

WomeN who ate just half a mushroom or more per day had 64 per cent lower odds of getting breast cancer — compared with women who didn’ t eat mushrooms at all.

If the mushroom- eaters also managed to sip at least half a teabag’s worth of green tea each day, then their risk of breast cancer would be a whopping 90 per cent lower.

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