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Nutrient-dense foods give your body the vitamins, minerals, and antioxidants it needs for a healthy immune system. Build your meals around lean proteins and fresh produce, which are packed with nutrients. For snacks, choose fresh fruits and veggies. You want to get the most “bang for your buck” from what you eat by choosing nutrient-dense foods like fresh vegetables, not nutrient-light foods like a bag of cookies, for instance.  Give your body every advantage in drawing as much nutrition as possible from the food you eat. It’s best to work with your medical team to pinpoint the specific nutrients you need. However, most people will benefit from consuming more of the following vitamins:  Vitamin K, which aids in blood clotting and has anti-inflammatory properties (inflammation can be a cause of platelet destruction).  Vitamin K is found in leafy greens like kale, collards, spinach, broccoli, and edible seaweed.  Cook these vegetables lightly if at all to retain nutrients.  Eggs and liver are also food sources of Vitamin K. Folate (Vitamin B9), which is important in the cell division process (remember that platelets are cells); low folate counts can also contribute to low platelet counts.  Folate-rich foods like asparagus, oranges, spinach, and fortified (whole grain, low sugar) cereals should be a part of your diet anyway. Vitamin supplements may also be a consideration, so talk to your doctor. Watch your intake of omega-3 fatty acids, which are an immune-system booster with anti-inflammatory properties found in fish, edible seaweed, walnuts, flaxseed oil, and fortified eggs.  People with cardiovascular disease risks can benefit from consuming more omega-3.  However, omega 3 fatty acids inhibit platelet-activating factor and reduce platelet activation, so in the case of thrombocytopenia, omega-3 fa are contraindicated. Low-nutrient, high calorie foods, such as foods with refined grains (white bread, for example) and sugars (cakes, cookies, etc.) provide little benefit to the body and are considered by some to increase inflammation.  Heavy alcohol consumption can damage bone marrow and decrease platelet production, so it is probably wise to severely restrict or even eliminate alcohol consumption if you are trying to increase platelet levels. Gluten sensitivity and celiac disease (essentially a gluten allergy) are autoimmune disorders that may negatively impact platelet counts.  Consider being tested for these disorders and, if so, eliminate gluten from your diet. Cardiovascular workouts, like walking or swimming, and strength training exercises promote blood flow within the body and can help boost your immune system, both of which can be beneficial if you have a low platelet count.  You need to be smart and take precautions, however.  If you have thrombocytopenia, you may fatigue more easily.  Fatigue and overexertion can make you more susceptible to injury. Take special care not to engage in bleeding risk activities — not just external but internal bleeding (bruising).  Remember that with a low platelet count, your blood will clot more slowly. Sports and impact activities — pickup basketball and skating, to name some examples — need to be done with extra caution or not at all.  Protect yourself from scrapes, cuts, and bruises even while walking by wearing good fitting shoes with traction, layering loose-fitting clothing, and generally paying attention. On a side note regarding bleeding risks, talk to your doctor about over-the counter medications that may increase this risk, such as aspirin and other pain relievers. Seven to nine hours of sleep is recommended for adults regardless of platelet count, but those seeking to boost their count can only benefit from allowing their body time to rest and recharge. You may feel tired more often if you have a low platelet count, so you need to balance your need for rest with the benefits of remaining (carefully) active.  Consult your physician. by drinking at least 8 cups (1.9 L) of water daily.  Everybody needs water, and few of us consume enough.  A properly hydrated body is a better functioning body, one that may be more conducive to platelet formation.  The average adult should consume between two-to-three liters of liquids daily, so the old adage of drinking eight (8 oz.) glasses of water today is fairly accurate.  Some espouse drinking warm or even hot water to boost platelet levels because colder water slows the digestive process and therefore can hinder nutrient absorption.  At the very least, drinking water at any palatable temperature can’t hurt, so give this a try if you wish. Being positive about your situation may help support your recovery. This is because your mind and body are connected. While positive thoughts won’t make your condition go away, they can help you have a better experience during your recovery. It may be hard to quantify the benefits of a positive attitude, but this is another piece of advice that certainly can’t hurt your chances of improvement. There are countless websites with countless opinions about how low platelet counts can be increased naturally.  Making sense of the wide-ranging and often contradictory information available can be a challenge, and is part of the reason why your physician should be involved.  Sample diets from reputable organizations that focus on platelet disorders can differ on the value of consuming milk, for instance, demonstrating the challenge in determining the proper course to follow.  There is, in truth, little scientifically-supported evidence that a particular diet can increase platelet levels, for example.  What seems closer to scientific fact is the idea that changes in diet can help defend against platelet decreases. Does this mean you have no options?  No.  It just means you need to do your homework, manage your expectations, and rely on your medical team for advice and assistance.
Eat a healthy diet to help support your immune system. Target key nutrients that directly support your platelet levels. Cut down on processed and sugary foods that contain fewer nutrients. Exercise regularly to improve your overall health, but be safe. Get adequate rest so your body can recharge and repair itself. Stay hydrated Stay positive to help yourself feel better. Try to separate science from speculation.