You may be hitting your goal weight on the keto diet, but is it worth risking your heart health and longevity? February is Heart Health month, and for good reason – heart disease is still the leading cause of death worldwide. Because an astounding 45 percent of all heart attacks are silent – meaning they have no obvious symptoms – we must look for clues that you may be at risk. And the first place the First Lady of Nutrition looks is your diet.