Illustrations by Liz Zonarich/Harvard Staff


Health

Which diet is right for you? Wrong question.


1 min read

Quiz based on Daniel Lieberman’s new book looks at food fads through evolutionary lens

Humans didn’t evolve to shop for food that has been collected, packaged with nutritional information, and arranged by category in brightly lit supermarkets. In fact, we didn’t evolve to choose our food at all. 

In his new book, “Fed Up: What Evolution Reveals about Food, Diet, Health, and Eating Well,” Daniel Lieberman, Edwin M. Lerner II Professor of Biological Sciences in the Department of Human Evolutionary Biology, explores how our ancestors evolved to eat almost anything they could hunt, gather, or grow in whatever habitat they happened to find themselves. Which makes the modern American diet’s embarrassment of riches a real conundrum. Should we eat low-carb or low-fat, vegan or strictly animal products?

In “Fed Up,” Lieberman argues that most diets cling too firmly to one “big idea” and that they can, and should be, much more flexible. Lieberman helped us develop this quiz based on the book to help us make sense of it all.


var gform;gform||(document.addEventListener(“gform_main_scripts_loaded”,function(){gform.scriptsLoaded=!0}),document.addEventListener(“gform/theme/scripts_loaded”,function(){gform.themeScriptsLoaded=!0}),window.addEventListener(“DOMContentLoaded”,function(){gform.domLoaded=!0}),gform={domLoaded:!1,scriptsLoaded:!1,themeScriptsLoaded:!1,isFormEditor:()=>”function”==typeof InitializeEditor,callIfLoaded:function(o){return!(!gform.domLoaded||!gform.scriptsLoaded||!gform.themeScriptsLoaded&&!gform.isFormEditor()||(gform.isFormEditor()&&console.warn(“The use of gform.initializeOnLoaded() is deprecated in the form editor context and will be removed in Gravity Forms 3.1.”),o(),0))},initializeOnLoaded:function(o){gform.callIfLoaded(o)||(document.addEventListener(“gform_main_scripts_loaded”,()=>{gform.scriptsLoaded=!0,gform.callIfLoaded(o)}),document.addEventListener(“gform/theme/scripts_loaded”,()=>{gform.themeScriptsLoaded=!0,gform.callIfLoaded(o)}),window.addEventListener(“DOMContentLoaded”,()=>{gform.domLoaded=!0,gform.callIfLoaded(o)}))},hooks:{action:{},filter:{}},addAction:function(o,r,e,t){gform.addHook(“action”,o,r,e,t)},addFilter:function(o,r,e,t){gform.addHook(“filter”,o,r,e,t)},doAction:function(o){gform.doHook(“action”,o,arguments)},applyFilters:function(o){return gform.doHook(“filter”,o,arguments)},removeAction:function(o,r){gform.removeHook(“action”,o,r)},removeFilter:function(o,r,e){gform.removeHook(“filter”,o,r,e)},addHook:function(o,r,e,t,n){null==gform.hooks[o][r]&&(gform.hooks[o][r]=[]);var d=gform.hooks[o][r];null==n&&(n=r+”_”+d.length),gform.hooks[o][r].push({tag:n,callable:e,priority:t=null==t?10:t})},doHook:function(r,o,e){var t;if(e=Array.prototype.slice.call(e,1),null!=gform.hooks[r][o]&&((o=gform.hooks[r][o]).sort(function(o,r){return o.priority-r.priority}),o.forEach(function(o){“function”!=typeof(t=o.callable)&&(t=window[t]),”action”==r?t.apply(null,e):e[0]=t.apply(null,e)})),”filter”==r)return e[0]},removeHook:function(o,r,t,n){var e;null!=gform.hooks[o][r]&&(e=(e=gform.hooks[o][r]).filter(function(o,r,e){return!!(null!=n&&n!=o.tag||null!=t&&t!=o.priority)}),gform.hooks[o][r]=e)}});

Step 1 of 10

1. The Paleo diet recommends eating like “hunter-gatherers,” with a focus on lean meats, fruits, and vegetables. But what is actually true about how contemporary hunter-gatherers eat?

document.getElementById( “ak_js_1” ).setAttribute( “value”, ( new Date() ).getTime() );

gform.initializeOnLoaded( function() {jQuery(‘#gform_ajax_frame_42’).on(‘load’,function(){var contents = jQuery(this).contents().find(‘*’).html();var is_postback = contents.indexOf(‘GF_AJAX_POSTBACK’) >= 0;if(!is_postback){return;}var form_content = jQuery(this).contents().find(‘#gform_wrapper_42’);var is_confirmation = jQuery(this).contents().find(‘#gform_confirmation_wrapper_42’).length > 0;var is_redirect = contents.indexOf(‘gformRedirect(){‘) >= 0;var is_form = form_content.length > 0 && ! is_redirect && ! is_confirmation;var mt = parseInt(jQuery(‘html’).css(‘margin-top’), 10) + parseInt(jQuery(‘body’).css(‘margin-top’), 10) + 100;if(is_form){jQuery(‘#gform_wrapper_42’).html(form_content.html());if(form_content.hasClass(‘gform_validation_error’)){jQuery(‘#gform_wrapper_42’).addClass(‘gform_validation_error’);} else {jQuery(‘#gform_wrapper_42’).removeClass(‘gform_validation_error’);}setTimeout( function() { /* delay the scroll by 50 milliseconds to fix a bug in chrome */ jQuery(document).scrollTop(jQuery(‘#gform_wrapper_42’).offset().top – mt); }, 50 );var current_page = jQuery(‘#gform_source_page_number_42’).val();jQuery(document).trigger(‘gform_page_loaded’, [42, current_page]);window[‘gf_submitting_42’] = false;}else if(!is_redirect){var confirmation_content = jQuery(this).contents().find(‘.GF_AJAX_POSTBACK’).html();if(!confirmation_content){confirmation_content = contents;}jQuery(‘#gform_wrapper_42’).replaceWith(confirmation_content);jQuery(document).scrollTop(jQuery(‘#gf_42’).offset().top – mt);jQuery(document).trigger(‘gform_confirmation_loaded’, [42]);window[‘gf_submitting_42’] = false;wp.a11y.speak(jQuery(‘#gform_confirmation_message_42’).text());}else{jQuery(‘#gform_42’).append(contents);if(window[‘gformRedirect’]) {gformRedirect();}}jQuery(document).trigger(“gform_pre_post_render”, [{ formId: “42”, currentPage: “current_page”, abort: function() { this.preventDefault(); } }]); if (event && event.defaultPrevented) { return; } const gformWrapperDiv = document.getElementById( “gform_wrapper_42” ); if ( gformWrapperDiv ) { const visibilitySpan = document.createElement( “span” ); visibilitySpan.id = “gform_visibility_test_42”; gformWrapperDiv.insertAdjacentElement( “afterend”, visibilitySpan ); } const visibilityTestDiv = document.getElementById( “gform_visibility_test_42” ); let postRenderFired = false; function triggerPostRender() { if ( postRenderFired ) { return; } postRenderFired = true; gform.core.triggerPostRenderEvents( 42, current_page ); if ( visibilityTestDiv ) { visibilityTestDiv.parentNode.removeChild( visibilityTestDiv ); } } function debounce( func, wait, immediate ) { var timeout; return function() { var context = this, args = arguments; var later = function() { timeout = null; if ( !immediate ) func.apply( context, args ); }; var callNow = immediate && !timeout; clearTimeout( timeout ); timeout = setTimeout( later, wait ); if ( callNow ) func.apply( context, args ); }; } const debouncedTriggerPostRender = debounce( function() { triggerPostRender(); }, 200 ); if ( visibilityTestDiv && visibilityTestDiv.offsetParent === null ) { const observer = new MutationObserver( ( mutations ) => { mutations.forEach( ( mutation ) => { if ( mutation.type === ‘attributes’ && visibilityTestDiv.offsetParent !== null ) { debouncedTriggerPostRender(); observer.disconnect(); } }); }); observer.observe( document.body, { attributes: true, childList: false, subtree: true, attributeFilter: [ ‘style’, ‘class’ ], }); } else { triggerPostRender(); } } );} );

Shares: