Page 41 - BBC - The Scientific Guide to a Healthier You
P. 41

DIET







             BUTTER



             In recent years there has been an                                        fats and a higher risk for heart disease. Hence the ‘butter is
             ongoing debate about butter,                                             back’ headlines that were splashed all over the internet. But
             which has led to consumer                                                those behind the study warned against over-simplification.

             confusion in the supermarket                                             They had found that there are different types of saturated fats
             chilled section. So let’s set                                            with varying compositions that all do different things – some
             the record straight.                                                     good, some bad. While some dairy products might turn out to
               Butter is a saturated fat.                                             cut disease risk, that thought wasn’t extended to butter. The
             For decades, we have been                                                team agreed with butter being linked to bad cholesterol. This
             advised to reduce                                                        is backed up by a recent study by researchers from Harvard,
             saturated fat in our diets,                                              who found that a five per cent higher intake of saturated fats,
             based on the argument                                                    like butter, was associated with a 25 per cent increased risk of
             that it increases bad                                                    heart disease. This supports current guidelines focusing on
             cholesterol in the blood,                                                reducing saturated fat intake and replacing butter with oils
             which can clog arteries,                                                 high in unsaturated fat. Nevertheless, according to the study
             causing heart attacks or strokes.                                        you won’t see any benefits from cutting out saturated fat if you
             Public Health England advises                                            continue filling up on refined carbs such as white bread. It’s
             people to cut down on saturated fat,                                               only by eating complex carbs like vegetables and
             based on a review of 15 clinical trials.                                                wholegrains that you can slash your risk.
               On the other hand, researchers at the                           Some
             University of Cambridge presented a study in                                                VERDICT: Stick to olive and sunflower oil for
             2014, published in Annals of Internal Medicine,             dairy goods                       cooking, and use butter sparingly.
             reviewing existing published data. The team            might cut disease
             stated that there was no significant evidence
             regarding a correlation between saturated                   risk, but that
                                                                        thought does


                                                                          not include
            PASTEURISED MILK                                                  butter



             There are recognised health benefits to
             the white stuff – it’s full of nutrients and
             helps build strong bones. But, recently,         bacteria. Unfortunately, it kills the
             proponents have been claiming that               beneficial ones too. Still, according to a
             drinking raw milk, rather than pasteurised,      2015 analysis by Johns Hopkins University,
             offers even greater benefits. But what’s         consumers are 100 times more likely to get
             the difference? Raw milk comes from              food-borne illnesses from raw milk than
             grass-fed cows and is full of nutrients,         pasteurised. For consumer safety,
             including beneficial bacteria like               European and North American legislation
             Lactobacillus acidophilus. This ‘good’           mandates the pasteurisation of milk and
             bacteria produces vitamin K2, improves           that is what we buy from shops.
             absorption of nutrients and normalises             If you want to give raw milk a try, you’ll
             gut function. Raw milk contains high levels      have to go to specialist outlets, such as
             of vitamins, enzymes and calcium. But it         farm shops and markets. Unpasteurised
                                                              cheeses, like parmesan, are more widely
             can also contain bacteria that cause food
         SHUTTERSTOCK, GETTY X2  poisoning and can be particularly harmful   available because harmful bacteria occur
                                                              in such low numbers.
             to children, people who are unwell and
             pregnant women.
               Pasteurisation is a process where heat
                                                              VERDICT: Milk is great for calcium and other
             is applied to milk to destroy harmful
                                                              nutrients, but pasteurised is safer. 5
   36   37   38   39   40   41   42   43   44   45   46