For men suffering from a lack of testosterone, the first step will be to get a diagnosis from a doctor, to check whether there is a genital abnormality.
Furthermore, excess weight is often found to be the cause of this type of problem; it is therefore advisable to follow a healthy, balanced diet in order to lose the excess fat.
Depression and stress are also two factors behind a drop in testosterone levels; and to remedy this, herbal teas made from valerian, passionflower, or linden will work very well.
Also, among the greatest testosterone boosters is ginseng, and in particular Indian ginseng called "ashwagandha," whose name refers to the strength of a horse. Indeed, Indian ginseng has been the subject of studies that have shown its effectiveness in testosterone production. It is therefore advisable to take capsules at a rate of three per day.
In addition, among the elements beneficial for men suffering from a testosterone disorder is the Himalayan mushroom called cordyceps. It is rare, and is described as half-animal, half-plant. It is best to take cordyceps in powder form, mixed into yogurt, for example, or into coffee.
Furthermore, the consumption of juices such as apple juice or cherry juice should be favored.
Finally, there is a very powerful mixture made of honey, black seed (Nigella sativa), royal jelly, and bee pollen, of which it is recommended to take a large spoonful in the morning on an empty stomach and before going to bed.
What the science says: linden, valerian and calming plants, medicinal mushrooms
What the published research says about the remedies mentioned above, for context—the studies address material causes, while healing belongs to Allah.
Linden, valerian and calming plants
Valerian improves sleep quality according to several meta-analyses (Am J Med, 2006) (J Evid Based Integr Med, 2020); linden contains anxiolytic flavonoids (J Ethnopharmacol, 2008), and a network review compares plants against anxiety (passionflower, lemon balm, lavender...) (Pharmacol Res, 2022). Precaution: do not combine valerian, passionflower or hops with sleeping pills and anxiolytics without medical advice; avoid before driving; use for a few weeks at a time rather than continuously.
Medicinal mushrooms
Reishi (Ganoderma lucidum) and other medicinal mushrooms contain beta-glucans and triterpenes with immunomodulatory effects, critically reviewed (Phytother Res, 2021) (Biomolecules, 2022) (Molecules, 2023)—hence their place in the immune-support courses the professor recommends. Precaution: quality and origin should be verified; caution in case of immunosuppressive treatment, anticoagulants, or before surgery; courses of 2 to 3 months rather than continuous use.
