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Fatigue, brain fog, hair loss, poor sleep and stubborn weight often share one root cause: a nutrient your body is not getting or not absorbing. As a nutrients specialist in South Florida, Jeffrey Dach, MD measures your vitamin, mineral and antioxidant levels with blood testing, then builds a correction plan around the results – not a generic multivitamin or meal plan.
Dr. Dach is a board-certified physician with more than 40 years in medicine, including 25 years at Memorial hospitals in South Broward. Since 2005 he has led TrueMedMD in Davie, where nutrient testing sits alongside thyroid treatment, bioidentical hormone replacement and integrative medicine. Patients come from Davie, Fort Lauderdale, Plantation, Weston, Cooper City, Pembroke Pines, Hollywood and across Broward, Miami-Dade and Palm Beach counties.
Low vitamin D is common in South Florida despite year-round sun, because most people work indoors and use sunscreen. It is linked to fatigue, low mood, frequent infections and bone loss. We measure 25-hydroxy vitamin D, dose to your result, and recheck the level. Dr. Dach has written about this for years in vitamin D deficiency: the ignored epidemic.
Low B12 and low iron stores are two of the most overlooked causes of tiredness. Risk is higher with heavy periods, plant-based diets, and long-term use of acid blockers (PPIs) or metformin, both of which reduce absorption. We check B12 with methylmalonic acid and iron with ferritin, so the right form and dose can be used. Read more on how PPI antacids deplete B12 and iron.
Magnesium supports muscle, nerve, sleep and heart function, yet standard serum tests can look normal while tissue stores are low. We use RBC magnesium and symptoms such as cramps, palpitations, poor sleep and headaches to guide treatment. Dr. Dach reviews the cardiac evidence in magnesium for heart disease prevention.
Omega-3 status affects inflammation, heart health, mood and memory. Rather than guessing from diet, we can measure your omega-3 index along with markers such as hs-CRP and homocysteine, then adjust fish intake or supplements and retest.
Hormones depend on nutrients. Selenium, zinc, iron and vitamin D all affect thyroid hormone production and conversion, which is why low levels often show up in patients with high TPO thyroid antibodies or in those who feel tired on levothyroxine. Correcting these gaps works alongside – not instead of – hypothyroidism treatment and evidence-based thyroid supplements.
For women in perimenopause or menopause, nutrient status shapes how well estrogen replacement therapy works. For men, zinc, vitamin D and magnesium influence testosterone and low testosterone treatment results. Every plan is built from your bloodwork, symptoms and current medications.
Chronic stress and high cortisol also drain magnesium, B vitamins and vitamin C, so your consultation includes a look at stress and adrenal health.
You can eat well and still be deficient if your gut does not absorb nutrients. Low stomach acid, celiac disease, SIBO, inflammatory bowel conditions and “leaky gut” all reduce absorption of iron, B12, magnesium and fat-soluble vitamins.
If you have bloating, irregularity, reflux or food sensitivities, we look for the cause with stool, celiac and food-sensitivity testing where appropriate, then use:
For deeper GI work-ups, see our digestive health specialists in South Florida and Dr. Dach’s Hashimoto’s diet guide.